Kemporn Kitsahawong - Academia.edu (original) (raw)

Papers by Kemporn Kitsahawong

Brazilian Oral Research, Oct 20, 2015

The purpose of this study was to compare the performance of chemomechanical caries removal (CMCR)... more The purpose of this study was to compare the performance of chemomechanical caries removal (CMCR) with that of conventional drilling for efficacy of caries removal, time spent, morphological changes and microhardness of surface dentin, and microleakage of subsequent restorations. Forty-six carious deciduous molars were randomly divided into two groups: one each for caries removal by (1) CMCR and by (2) drilling. The completeness of caries removal was evaluated by visual and tactile criteria and a caries detector device. Twenty teeth in each group were restored with glass ionomer (GI) and subjected to thermocycling before undergoing microleakage and microhardness tests. In each group, three restored teeth were used for polarized light microscopic analysis, and three unrestored teeth for scanning electron microscopy (SEM). There was no significant difference in the completeness of caries removal between groups. However, time spent for caries removal by CMCR was significantly longer than that required for drilling. Restorations in the CMCR group had significantly more microleakage than those in the drilling group. Dentin hardness of the cavity floor after CMCR was also significantly lower. Microscopic analyses showed roughened and irregular dentin surfaces in the CMCR group, unlike the smooth surfaces observed in the drilling group. In conclusion, CMCR was as efficacious as drilling in term of completeness of caries removal, but required longer excavation times and resulted in lower microhardness of residual dentin as well as more microleakage after restorations with GI. Further laboratory and clinical evaluations on the efficiency and performance of CMCR for the durability of subsequent restorations are required.

Journal of Dental Research

Dental caries is the most common chronic disease in children that causes negative effects on thei... more Dental caries is the most common chronic disease in children that causes negative effects on their health, development, and well-being. Early preventive interventions are key to reduce early childhood caries prevalence. An efficient strategy is to provide risk-based targeted prevention; however, this requires an accurate caries risk predictor, which is still lacking for infants before caries onset. We aimed to develop a caries prediction model based on the salivary microbiome of caries-free 1-y-old children. Using a nested case-control design within a prospective cohort study, we selected 30 children based on their caries status at 1-y follow-up (at 2 y old): 10 children who remained caries-free, 10 who developed noncavitated caries, and 10 who developed cavitated caries. Saliva samples collected at baseline before caries onset were analyzed through 16S rRNA gene sequencing. The results of β diversity analysis showed a significant difference in salivary microbiome composition betwee...

Adams-Oliver Syndrome is a rare disease that consists of congenital defects of skull, scalp, skin... more Adams-Oliver Syndrome is a rare disease that consists of congenital defects of skull, scalp, skin, hair, eye, limbs, blood vessel, septo-valvular heart disease, mental retardation, cleft lip and palate. All of these provide various psychological problems to the parents and their families with psycho-social problems to the patients. Multidisciplinary approaches are necessarily to solve all of these complicated problems at each appropriate time. So as the pediatric dentists who play an important roles to provide comprehensive dental treatments and preventive oral health care for the patients and their parents. Key words : Adams-Oliver Syndrome, Dental treatment.

Dental erosion is defined as the loss of hard tissue from the teeth surface by chemical process n... more Dental erosion is defined as the loss of hard tissue from the teeth surface by chemical process not involving bacteria,Epidemiological evidence has shown that prolonged exposure to the swimming pool water is associated with enamel erosion.Symptoms of dental erosion range from sensitivity to severe pain associated with pulp exposure.This report presented an 11- year old female who suffered from dental erosion possibly due to continuously prolonged swimming, Her chief complaint was extremely sensitive teeth after swimming.The patient was instructed to wear a soft mouthguard during swimming and rinse with sodium fluoride mouthwash after swimming.One week later the patient reported that her teeth were asymptomatic.The result of treatment was very satisfied. Key words : dental erosion / mouthguard / swimming

International Journal of Clinical Preventive Dentistry, 2021

Breastfeeding offers abundant health advantages, but a concern of dental caries risk in toddlers ... more Breastfeeding offers abundant health advantages, but a concern of dental caries risk in toddlers with long durations of breastfeeding has been raised with limited and inconsistent findings. Therefore, we followed 1-year-old children for 2 years to investigate the association between breastfeeding duration and dental caries. Methods: The participants were 568 one-year-old children in Khon Kaen, Thailand. When the children were 12, 18, 24, 30 and 36-month-old, information on infant feeding practices and possible confounding factors were obtained by interviewing main caregivers through a structured questionnaire. Disregarding other foods and liquids, full breastfeeding refers to feeding breastmilk without formula milk, whereas any breastfeeding refers to feeding breastmilk with or without formula milk. Based on breastfeeding duration, children were categorized into four groups: <6, 6-11, 12-17, and ≥18 months, of full and of any breastfeeding separately. When children were 36-month-old, full-mouth examination was carried out by one calibrated dentist using modified WHO criteria. To estimate relative risks (RRs) and 95% confidence intervals (CIs), we used log-binomial regression with a generalized linear model. Results: Of the 486 children who completed the two-year follow-up, 60.3% had cavitated caries with a mean dft of 3.3. Caries prevalence significantly decreased in children with full breastfeeding for ≥6 months relative to those with <6 months (adjusted RR [aRR]=0.88, 95%CI: 0.82-0.94 for 6-11 months; aRR=0.68, 95%CI: 0.55-0.84 for 12-17 months; and aRR=0.64, 95%CI: 0.48-0.87 for ≥18 months). In contrast, children with any breastfeeding for ≥18 months had elevated risk of caries compared to those with <6 months (aRR=1.72; 95%CI: 1.55-1.92). Conclusions: The results suggest that the longer the full breastfeeding duration, the lower the chance of developing caries. Nevertheless, an increase in caries risk was found when children received mother's milk in combination with formula milk for 18 months or longer.

Khon Kaen University Dental Journal วิทยาสารทันตแพทยศาสตร์ มหาวิทยาลัยขอนแก่น, Jul 21, 2011

Anterior crossbite in the primary dentition should be treated to prevent abnormal wear of malpose... more Anterior crossbite in the primary dentition should be treated to prevent abnormal wear of malposed teeth,periodontal alterations and skeletal dysplasia.Various orthodontic teachniques have been proposed to correct incisor crossbite : removable appliance with auxiliary spring, fixed or removable mandibular acrylic inclined bite plane, reversed stainless steek crown and fixed arch wires with soldered springs.In this first case report is presented to show the success in the treatment of single primary anterior tooth crossbite with the use of reversed stainless steel crown. Advantages of this technique included ease of application, elimination of laboratory procedures and costs, rapidity of tooth movement and independence from patient cooperation. And in the second case is presented to show the success in the treatment of four primary anterior teeth crossbite with the use of removable appliance with auxiliary spring and screw.The result of treatment was very satified. Key words : Anterior crossbite, Stainless steel crown

Khon Kaen University Dental Journal วิทยาสารทันตแพทยศาสตร์ มหาวิทยาลัยขอนแก่น, Jul 14, 2011

Thrombocytopenia Absent Radius Syndrome or TAR syndrome is a rare syndrome associating bilateral ... more Thrombocytopenia Absent Radius Syndrome or TAR syndrome is a rare syndrome associating bilateral radial agenesis and severe congenital thrombocytopenia.Additional manifestations are congenital heart defects,mental retardation,cleft of soft palate and various other abnormalities. TAR Syndrome that is found with cleft lip and palate creates more complex oral problems such as tooth anomaliesm,abnormal facial structure and malocclusion.The effect of physical disabilities further reduces the patient's ability to care for own oral hygiene which leads to dental caries and gingivitis.Treatment for this group of patients must be taken in regards to diseases that may cause complications during dental treatment and planned out with multidisciplinary managements,with emphasis in promoting preventative dental care such as maintaining oral hygiene,diet counseling,sealant,the use of phasis in promoting preventative dental care such as maintaining oral hygiene,diet counseling,sealant,the use of fluoride and regular visits to the dentist.The key is to provide patient's ability to care for self in the long term along with a positive attitude since the above abnormalities not only causes physical disabilities but also emotional and social disabilities as well Key words : TAR syndrome / cleft lip / cleft palate/dental treatment

Khon Kaen University Dental Journal วิทยาสารทันตแพทยศาสตร์ มหาวิทยาลัยขอนแก่น, Jul 19, 2011

Khon Kaen University Dental Journal วิทยาสารทันตแพทยศาสตร์ มหาวิทยาลัยขอนแก่น, Jul 19, 2011

Epidemiological evidence has shown that prolonged exposure to swimming pool water is associated w... more Epidemiological evidence has shown that prolonged exposure to swimming pool water is associated with dental erosion.Although mouthguard and fluoride mouth rinses are recommended for protecting the teeth from damage by acids, the supporting evidence has been scarcely documented. The purpose of this study was to assess the effect of a mouthguard in conjunction with fluoride mouth rinses on surface hardness of dental enamel after exposure to chlorinated water. In this in vitro experimental study,44 human premolar teeth were mesiodistally separated into buccal and lingual slabs.Enamel slabs from each tooth were randomly allocated into the study group (treated with mouthguard) and the control group (treated without mouthguard). Both group were immersed in chlorinatef water at pH 3 for 2 hours, and then immersed in 0.05 NaF mouth rinse for 1 minute. The surface hardness of enamel was assessed before and after immersion using Vickers microhardness tester (Matsuzawa Model MTX 70), Another three human premolar teeth were prepared for SEM examination. The results showed that the mean Vickers microhardness number (VHN) of the control group at baseline was 345.4+29.0 and 291.9+36.0 after immersion with mean VHN difference (before and after immersion) of 53.5+31.4. The mean VHN of the study group at baseline was 341.1+26.0 and 346.1+37.0 after immersion with mean VHN difference of -4.4+27.3. There was a significant difference in the decrease in mean VHN difference in the decrease in mean VHN difference between control study group (p<0.001). SEM revealed honeycomb-like etched patterns on enamel surface of all specimens in the control group but not in the study group. This study comfirms that exposure to swimming pool water at low pH for long duration leads to dental erosion and suggests that the use of mouthguard in comjunction with fluoride mouth rinse could completely prevent dental erosion, with respect to surface hardness and apperance. Key words : dental erosion / surface enamel microhardness / mouthgaurd / fluoride

Khon Kaen University Dental Journal วิทยาสารทันตแพทยศาสตร์ มหาวิทยาลัยขอนแก่น, Jul 21, 2011

The purpose of this study was to determine the fluoride content in the tap water from four water ... more The purpose of this study was to determine the fluoride content in the tap water from four water supplies and 83 brands of commercially bottled drinking water in Amphur Muang,Khon Kaen.The Fluoride assay was performed using the fluoride ion analyzer ( Orion Model EA 940 ionalyzer,electrode Orion model 94-90). Each sample was analyzed twice at 25 degree celcius and the average of measurement was calculated.The rasults showed that the mean fluoride contents in tap water and in commercially bottled drinking water were 0.075 ± 0.030 ppm (CI 95% = 0.028-0.122) and 0.086 ± 0.114 ppm,respectively.The mean fluoride contest in 29 brands produced in Amphur Muang district was 0.062±0.054 ppm(CI 95% = 0.063-0.136). By considering 70 brands of general drinking water was 0.073±0.101 ppm and that in mineral water was 0.155±0.152 ppm. When the commercially bottled drinking water was classified into 3 groups by their fluoride levels: 79 brands (95.2%) had less than 0.3 ppm fluoride; 3 brands (3.6%) between 0.3 and 0.6 ppm and 1 brand (1.2%) greater than 0.6 ppm. In conclusion,most of the fluoride concentration in tap water ans commercially bottled drinking waters surveyed in this study was less than 0.3 ppm which was considered too low to cause dental fluorosis.Dentists, however,should be aware of both the age of child patients and the fluoride concentrations of the drinking water when prescribing fluoride supplements. Key words : Fluoride / Tap water ? Bottled drinking water

Khon Kaen University Dental Journal วิทยาสารทันตแพทยศาสตร์ มหาวิทยาลัยขอนแก่น, Jul 26, 2011

Khon Kaen University Dental Journal วิทยาสารทันตแพทยศาสตร์ มหาวิทยาลัยขอนแก่น, Jul 23, 2011

Khon Kaen University Dental Journal วิทยาสารทันตแพทยศาสตร์ มหาวิทยาลัยขอนแก่น, Jul 19, 2011

Posterior crossbite is one of the most frequent observed malocclusion of the deciduous and mixed ... more Posterior crossbite is one of the most frequent observed malocclusion of the deciduous and mixed dentition period.A posterior crossbite malocclusion is defined as an abnormal bucco-lingual relationship.One or more maxillary teeth improperly occlude with one or more mandibular teeth in centric occlusion.The prevalence of this malocclusion is regarded to be 1-23.5% The purpose of this article is to provide a comprehensive literature review concerning about the clinical characteristic of posterior crossbite.The article is presented and discussed the various aspects of posterior crossbite corrections with regard to the cause and differential diagnosis. Key words : Crossbite,Posterior crossbite

Khon Kaen University Dental Journal วิทยาสารทันตแพทยศาสตร์ มหาวิทยาลัยขอนแก่น, Jul 24, 2011

Khon Kaen University Dental Journal วิทยาสารทันตแพทยศาสตร์ มหาวิทยาลัยขอนแก่น, Jul 27, 2011

Khon Kaen University Dental Journal วิทยาสารทันตแพทยศาสตร์ มหาวิทยาลัยขอนแก่น, Jun 2, 2011

This clinical report presented a 12-years-6-months old girl who had sensitive teeth when swimming... more This clinical report presented a 12-years-6-months old girl who had sensitive teeth when swimming, colddrinking, air stimulation and eating from dental erosion. She was diagnosed dental erosion with hypersensitive dentinedue to continuously prolonged swimming. She is a swimmer and has to swim in gas-chlorinated swimming pool about 1-2 hours 6 days a week without other contributing factors. The treatment plans are suggestion of the preventive strategiesand restoration anterior teeth with resin composite and customized clear matrix to decrease clinical chair time andimprove esthetics. After the treatment the patient reported that her teeth were asymptomatic. The result of treatment wassatisfied on both patient and dentist.Keywords: dental erosion/ swimming/ restoration/ customized clear matrix

Khon Kaen University Dental Journal วิทยาสารทันตแพทยศาสตร์ มหาวิทยาลัยขอนแก่น, Mar 8, 2013

Microleakage is the most common cause of failure of almost all restorative materials since it is ... more Microleakage is the most common cause of failure of almost all restorative materials since it is a major contributing factor to hypersensitivity, marginal discoloration, secondary caries and pulpal inflammation. Microleakage is always an issue at the cavosurface margin of the proximal box in class II restorations especially at gingival margin. The objective of this study was to compare the mean of microleakage rate at gingival margins of class II glass ionomer (Ketac N100TM,GC Fuji FillingTMLC and Fuji IX GPTM) and resin composite (FiltexTMZ250) restorations. Forty-eight extracted human primary molars were used. Class II (slot) cavity preparations were prepared on mesial or distal surfaces. The teeth were randomly divided into 4 groups (12 specimens per group) and restored with glass ionomers and resin composite following the manufacturer’s instructions. The samples were thermocycled, stained with 2% basic fuchsin dye and scored for microleakage by using stereomicroscope. The Kruskal-Wallis test showed the statistically significant differences among 4 groups (p 0.05). Keywords: Glass ionomer/ Resin composite/ Cass II/ Primary molars

Khon Kaen University Dental Journal วิทยาสารทันตแพทยศาสตร์ มหาวิทยาลัยขอนแก่น, Jun 2, 2011

The second premolar is a common congenital absent tooth. When the primary molar cannot be retain... more The second premolar is a common congenital absent tooth. When the primary molar cannot be retain in case of agenesis of the lower second premolar, there is the possibility of alveolar bone atrophy, and space closure might have a negative impact on facial fullness. Bearing these in mind, the removal of the distal half of second primary molar might allow closure in stages. Subsequent removal of the mesial half can be followed by space closure. Using this hemisection approach, space closure can be continued with case improving treatment results. This paper present a case report about the technique of hemisection in primary teeth. The pulp is extirpated from pulp chamber and root canal filling with zinc oxide eugenol cement and restoration with amalgam. The tooth is cut in half and the distal half carefully removed. The mesial portion almost always heals without negative consequence. The regiment can be observed as if it were a standard situation of sequential extraction. when the permanent first molar drifts close enough to where further mesial migration becomes impeded, the mesial portion can be removed. Hemisection and remove of the distal half of the second primary molar, in cased when the second premolar missing, provide an excellent first step in the process of space closure. This can be followed by removed of the mesial portion and space closure continued, with careful mechanics, the hemisection process can help to minimized the backward movement of the anterior teeth. Key words: congenital missing teeth, hemisection

Brazilian Oral Research, 2015

The purpose of this study was to compare the performance of chemomechanical caries removal (CMCR)... more The purpose of this study was to compare the performance of chemomechanical caries removal (CMCR) with that of conventional drilling for efficacy of caries removal, time spent, morphological changes and microhardness of surface dentin, and microleakage of subsequent restorations. Forty-six carious deciduous molars were randomly divided into two groups: one each for caries removal by (1) CMCR and by (2) drilling. The completeness of caries removal was evaluated by visual and tactile criteria and a caries detector device. Twenty teeth in each group were restored with glass ionomer (GI) and subjected to thermocycling before undergoing microleakage and microhardness tests. In each group, three restored teeth were used for polarized light microscopic analysis, and three unrestored teeth for scanning electron microscopy (SEM). There was no significant difference in the completeness of caries removal between groups. However, time spent for caries removal by CMCR was significantly longer than that required for drilling. Restorations in the CMCR group had significantly more microleakage than those in the drilling group. Dentin hardness of the cavity floor after CMCR was also significantly lower. Microscopic analyses showed roughened and irregular dentin surfaces in the CMCR group, unlike the smooth surfaces observed in the drilling group. In conclusion, CMCR was as efficacious as drilling in term of completeness of caries removal, but required longer excavation times and resulted in lower microhardness of residual dentin as well as more microleakage after restorations with GI. Further laboratory and clinical evaluations on the efficiency and performance of CMCR for the durability of subsequent restorations are required.

Brazilian Oral Research, Oct 20, 2015

The purpose of this study was to compare the performance of chemomechanical caries removal (CMCR)... more The purpose of this study was to compare the performance of chemomechanical caries removal (CMCR) with that of conventional drilling for efficacy of caries removal, time spent, morphological changes and microhardness of surface dentin, and microleakage of subsequent restorations. Forty-six carious deciduous molars were randomly divided into two groups: one each for caries removal by (1) CMCR and by (2) drilling. The completeness of caries removal was evaluated by visual and tactile criteria and a caries detector device. Twenty teeth in each group were restored with glass ionomer (GI) and subjected to thermocycling before undergoing microleakage and microhardness tests. In each group, three restored teeth were used for polarized light microscopic analysis, and three unrestored teeth for scanning electron microscopy (SEM). There was no significant difference in the completeness of caries removal between groups. However, time spent for caries removal by CMCR was significantly longer than that required for drilling. Restorations in the CMCR group had significantly more microleakage than those in the drilling group. Dentin hardness of the cavity floor after CMCR was also significantly lower. Microscopic analyses showed roughened and irregular dentin surfaces in the CMCR group, unlike the smooth surfaces observed in the drilling group. In conclusion, CMCR was as efficacious as drilling in term of completeness of caries removal, but required longer excavation times and resulted in lower microhardness of residual dentin as well as more microleakage after restorations with GI. Further laboratory and clinical evaluations on the efficiency and performance of CMCR for the durability of subsequent restorations are required.

Journal of Dental Research

Dental caries is the most common chronic disease in children that causes negative effects on thei... more Dental caries is the most common chronic disease in children that causes negative effects on their health, development, and well-being. Early preventive interventions are key to reduce early childhood caries prevalence. An efficient strategy is to provide risk-based targeted prevention; however, this requires an accurate caries risk predictor, which is still lacking for infants before caries onset. We aimed to develop a caries prediction model based on the salivary microbiome of caries-free 1-y-old children. Using a nested case-control design within a prospective cohort study, we selected 30 children based on their caries status at 1-y follow-up (at 2 y old): 10 children who remained caries-free, 10 who developed noncavitated caries, and 10 who developed cavitated caries. Saliva samples collected at baseline before caries onset were analyzed through 16S rRNA gene sequencing. The results of β diversity analysis showed a significant difference in salivary microbiome composition betwee...

Adams-Oliver Syndrome is a rare disease that consists of congenital defects of skull, scalp, skin... more Adams-Oliver Syndrome is a rare disease that consists of congenital defects of skull, scalp, skin, hair, eye, limbs, blood vessel, septo-valvular heart disease, mental retardation, cleft lip and palate. All of these provide various psychological problems to the parents and their families with psycho-social problems to the patients. Multidisciplinary approaches are necessarily to solve all of these complicated problems at each appropriate time. So as the pediatric dentists who play an important roles to provide comprehensive dental treatments and preventive oral health care for the patients and their parents. Key words : Adams-Oliver Syndrome, Dental treatment.

Dental erosion is defined as the loss of hard tissue from the teeth surface by chemical process n... more Dental erosion is defined as the loss of hard tissue from the teeth surface by chemical process not involving bacteria,Epidemiological evidence has shown that prolonged exposure to the swimming pool water is associated with enamel erosion.Symptoms of dental erosion range from sensitivity to severe pain associated with pulp exposure.This report presented an 11- year old female who suffered from dental erosion possibly due to continuously prolonged swimming, Her chief complaint was extremely sensitive teeth after swimming.The patient was instructed to wear a soft mouthguard during swimming and rinse with sodium fluoride mouthwash after swimming.One week later the patient reported that her teeth were asymptomatic.The result of treatment was very satisfied. Key words : dental erosion / mouthguard / swimming

International Journal of Clinical Preventive Dentistry, 2021

Breastfeeding offers abundant health advantages, but a concern of dental caries risk in toddlers ... more Breastfeeding offers abundant health advantages, but a concern of dental caries risk in toddlers with long durations of breastfeeding has been raised with limited and inconsistent findings. Therefore, we followed 1-year-old children for 2 years to investigate the association between breastfeeding duration and dental caries. Methods: The participants were 568 one-year-old children in Khon Kaen, Thailand. When the children were 12, 18, 24, 30 and 36-month-old, information on infant feeding practices and possible confounding factors were obtained by interviewing main caregivers through a structured questionnaire. Disregarding other foods and liquids, full breastfeeding refers to feeding breastmilk without formula milk, whereas any breastfeeding refers to feeding breastmilk with or without formula milk. Based on breastfeeding duration, children were categorized into four groups: <6, 6-11, 12-17, and ≥18 months, of full and of any breastfeeding separately. When children were 36-month-old, full-mouth examination was carried out by one calibrated dentist using modified WHO criteria. To estimate relative risks (RRs) and 95% confidence intervals (CIs), we used log-binomial regression with a generalized linear model. Results: Of the 486 children who completed the two-year follow-up, 60.3% had cavitated caries with a mean dft of 3.3. Caries prevalence significantly decreased in children with full breastfeeding for ≥6 months relative to those with <6 months (adjusted RR [aRR]=0.88, 95%CI: 0.82-0.94 for 6-11 months; aRR=0.68, 95%CI: 0.55-0.84 for 12-17 months; and aRR=0.64, 95%CI: 0.48-0.87 for ≥18 months). In contrast, children with any breastfeeding for ≥18 months had elevated risk of caries compared to those with <6 months (aRR=1.72; 95%CI: 1.55-1.92). Conclusions: The results suggest that the longer the full breastfeeding duration, the lower the chance of developing caries. Nevertheless, an increase in caries risk was found when children received mother's milk in combination with formula milk for 18 months or longer.

Khon Kaen University Dental Journal วิทยาสารทันตแพทยศาสตร์ มหาวิทยาลัยขอนแก่น, Jul 21, 2011

Anterior crossbite in the primary dentition should be treated to prevent abnormal wear of malpose... more Anterior crossbite in the primary dentition should be treated to prevent abnormal wear of malposed teeth,periodontal alterations and skeletal dysplasia.Various orthodontic teachniques have been proposed to correct incisor crossbite : removable appliance with auxiliary spring, fixed or removable mandibular acrylic inclined bite plane, reversed stainless steek crown and fixed arch wires with soldered springs.In this first case report is presented to show the success in the treatment of single primary anterior tooth crossbite with the use of reversed stainless steel crown. Advantages of this technique included ease of application, elimination of laboratory procedures and costs, rapidity of tooth movement and independence from patient cooperation. And in the second case is presented to show the success in the treatment of four primary anterior teeth crossbite with the use of removable appliance with auxiliary spring and screw.The result of treatment was very satified. Key words : Anterior crossbite, Stainless steel crown

Khon Kaen University Dental Journal วิทยาสารทันตแพทยศาสตร์ มหาวิทยาลัยขอนแก่น, Jul 14, 2011

Thrombocytopenia Absent Radius Syndrome or TAR syndrome is a rare syndrome associating bilateral ... more Thrombocytopenia Absent Radius Syndrome or TAR syndrome is a rare syndrome associating bilateral radial agenesis and severe congenital thrombocytopenia.Additional manifestations are congenital heart defects,mental retardation,cleft of soft palate and various other abnormalities. TAR Syndrome that is found with cleft lip and palate creates more complex oral problems such as tooth anomaliesm,abnormal facial structure and malocclusion.The effect of physical disabilities further reduces the patient's ability to care for own oral hygiene which leads to dental caries and gingivitis.Treatment for this group of patients must be taken in regards to diseases that may cause complications during dental treatment and planned out with multidisciplinary managements,with emphasis in promoting preventative dental care such as maintaining oral hygiene,diet counseling,sealant,the use of phasis in promoting preventative dental care such as maintaining oral hygiene,diet counseling,sealant,the use of fluoride and regular visits to the dentist.The key is to provide patient's ability to care for self in the long term along with a positive attitude since the above abnormalities not only causes physical disabilities but also emotional and social disabilities as well Key words : TAR syndrome / cleft lip / cleft palate/dental treatment

Khon Kaen University Dental Journal วิทยาสารทันตแพทยศาสตร์ มหาวิทยาลัยขอนแก่น, Jul 19, 2011

Khon Kaen University Dental Journal วิทยาสารทันตแพทยศาสตร์ มหาวิทยาลัยขอนแก่น, Jul 19, 2011

Epidemiological evidence has shown that prolonged exposure to swimming pool water is associated w... more Epidemiological evidence has shown that prolonged exposure to swimming pool water is associated with dental erosion.Although mouthguard and fluoride mouth rinses are recommended for protecting the teeth from damage by acids, the supporting evidence has been scarcely documented. The purpose of this study was to assess the effect of a mouthguard in conjunction with fluoride mouth rinses on surface hardness of dental enamel after exposure to chlorinated water. In this in vitro experimental study,44 human premolar teeth were mesiodistally separated into buccal and lingual slabs.Enamel slabs from each tooth were randomly allocated into the study group (treated with mouthguard) and the control group (treated without mouthguard). Both group were immersed in chlorinatef water at pH 3 for 2 hours, and then immersed in 0.05 NaF mouth rinse for 1 minute. The surface hardness of enamel was assessed before and after immersion using Vickers microhardness tester (Matsuzawa Model MTX 70), Another three human premolar teeth were prepared for SEM examination. The results showed that the mean Vickers microhardness number (VHN) of the control group at baseline was 345.4+29.0 and 291.9+36.0 after immersion with mean VHN difference (before and after immersion) of 53.5+31.4. The mean VHN of the study group at baseline was 341.1+26.0 and 346.1+37.0 after immersion with mean VHN difference of -4.4+27.3. There was a significant difference in the decrease in mean VHN difference in the decrease in mean VHN difference between control study group (p<0.001). SEM revealed honeycomb-like etched patterns on enamel surface of all specimens in the control group but not in the study group. This study comfirms that exposure to swimming pool water at low pH for long duration leads to dental erosion and suggests that the use of mouthguard in comjunction with fluoride mouth rinse could completely prevent dental erosion, with respect to surface hardness and apperance. Key words : dental erosion / surface enamel microhardness / mouthgaurd / fluoride

Khon Kaen University Dental Journal วิทยาสารทันตแพทยศาสตร์ มหาวิทยาลัยขอนแก่น, Jul 21, 2011

The purpose of this study was to determine the fluoride content in the tap water from four water ... more The purpose of this study was to determine the fluoride content in the tap water from four water supplies and 83 brands of commercially bottled drinking water in Amphur Muang,Khon Kaen.The Fluoride assay was performed using the fluoride ion analyzer ( Orion Model EA 940 ionalyzer,electrode Orion model 94-90). Each sample was analyzed twice at 25 degree celcius and the average of measurement was calculated.The rasults showed that the mean fluoride contents in tap water and in commercially bottled drinking water were 0.075 ± 0.030 ppm (CI 95% = 0.028-0.122) and 0.086 ± 0.114 ppm,respectively.The mean fluoride contest in 29 brands produced in Amphur Muang district was 0.062±0.054 ppm(CI 95% = 0.063-0.136). By considering 70 brands of general drinking water was 0.073±0.101 ppm and that in mineral water was 0.155±0.152 ppm. When the commercially bottled drinking water was classified into 3 groups by their fluoride levels: 79 brands (95.2%) had less than 0.3 ppm fluoride; 3 brands (3.6%) between 0.3 and 0.6 ppm and 1 brand (1.2%) greater than 0.6 ppm. In conclusion,most of the fluoride concentration in tap water ans commercially bottled drinking waters surveyed in this study was less than 0.3 ppm which was considered too low to cause dental fluorosis.Dentists, however,should be aware of both the age of child patients and the fluoride concentrations of the drinking water when prescribing fluoride supplements. Key words : Fluoride / Tap water ? Bottled drinking water

Khon Kaen University Dental Journal วิทยาสารทันตแพทยศาสตร์ มหาวิทยาลัยขอนแก่น, Jul 26, 2011

Khon Kaen University Dental Journal วิทยาสารทันตแพทยศาสตร์ มหาวิทยาลัยขอนแก่น, Jul 23, 2011

Khon Kaen University Dental Journal วิทยาสารทันตแพทยศาสตร์ มหาวิทยาลัยขอนแก่น, Jul 19, 2011

Posterior crossbite is one of the most frequent observed malocclusion of the deciduous and mixed ... more Posterior crossbite is one of the most frequent observed malocclusion of the deciduous and mixed dentition period.A posterior crossbite malocclusion is defined as an abnormal bucco-lingual relationship.One or more maxillary teeth improperly occlude with one or more mandibular teeth in centric occlusion.The prevalence of this malocclusion is regarded to be 1-23.5% The purpose of this article is to provide a comprehensive literature review concerning about the clinical characteristic of posterior crossbite.The article is presented and discussed the various aspects of posterior crossbite corrections with regard to the cause and differential diagnosis. Key words : Crossbite,Posterior crossbite

Khon Kaen University Dental Journal วิทยาสารทันตแพทยศาสตร์ มหาวิทยาลัยขอนแก่น, Jul 24, 2011

Khon Kaen University Dental Journal วิทยาสารทันตแพทยศาสตร์ มหาวิทยาลัยขอนแก่น, Jul 27, 2011

Khon Kaen University Dental Journal วิทยาสารทันตแพทยศาสตร์ มหาวิทยาลัยขอนแก่น, Jun 2, 2011

This clinical report presented a 12-years-6-months old girl who had sensitive teeth when swimming... more This clinical report presented a 12-years-6-months old girl who had sensitive teeth when swimming, colddrinking, air stimulation and eating from dental erosion. She was diagnosed dental erosion with hypersensitive dentinedue to continuously prolonged swimming. She is a swimmer and has to swim in gas-chlorinated swimming pool about 1-2 hours 6 days a week without other contributing factors. The treatment plans are suggestion of the preventive strategiesand restoration anterior teeth with resin composite and customized clear matrix to decrease clinical chair time andimprove esthetics. After the treatment the patient reported that her teeth were asymptomatic. The result of treatment wassatisfied on both patient and dentist.Keywords: dental erosion/ swimming/ restoration/ customized clear matrix

Khon Kaen University Dental Journal วิทยาสารทันตแพทยศาสตร์ มหาวิทยาลัยขอนแก่น, Mar 8, 2013

Microleakage is the most common cause of failure of almost all restorative materials since it is ... more Microleakage is the most common cause of failure of almost all restorative materials since it is a major contributing factor to hypersensitivity, marginal discoloration, secondary caries and pulpal inflammation. Microleakage is always an issue at the cavosurface margin of the proximal box in class II restorations especially at gingival margin. The objective of this study was to compare the mean of microleakage rate at gingival margins of class II glass ionomer (Ketac N100TM,GC Fuji FillingTMLC and Fuji IX GPTM) and resin composite (FiltexTMZ250) restorations. Forty-eight extracted human primary molars were used. Class II (slot) cavity preparations were prepared on mesial or distal surfaces. The teeth were randomly divided into 4 groups (12 specimens per group) and restored with glass ionomers and resin composite following the manufacturer’s instructions. The samples were thermocycled, stained with 2% basic fuchsin dye and scored for microleakage by using stereomicroscope. The Kruskal-Wallis test showed the statistically significant differences among 4 groups (p 0.05). Keywords: Glass ionomer/ Resin composite/ Cass II/ Primary molars

Khon Kaen University Dental Journal วิทยาสารทันตแพทยศาสตร์ มหาวิทยาลัยขอนแก่น, Jun 2, 2011

The second premolar is a common congenital absent tooth. When the primary molar cannot be retain... more The second premolar is a common congenital absent tooth. When the primary molar cannot be retain in case of agenesis of the lower second premolar, there is the possibility of alveolar bone atrophy, and space closure might have a negative impact on facial fullness. Bearing these in mind, the removal of the distal half of second primary molar might allow closure in stages. Subsequent removal of the mesial half can be followed by space closure. Using this hemisection approach, space closure can be continued with case improving treatment results. This paper present a case report about the technique of hemisection in primary teeth. The pulp is extirpated from pulp chamber and root canal filling with zinc oxide eugenol cement and restoration with amalgam. The tooth is cut in half and the distal half carefully removed. The mesial portion almost always heals without negative consequence. The regiment can be observed as if it were a standard situation of sequential extraction. when the permanent first molar drifts close enough to where further mesial migration becomes impeded, the mesial portion can be removed. Hemisection and remove of the distal half of the second primary molar, in cased when the second premolar missing, provide an excellent first step in the process of space closure. This can be followed by removed of the mesial portion and space closure continued, with careful mechanics, the hemisection process can help to minimized the backward movement of the anterior teeth. Key words: congenital missing teeth, hemisection

Brazilian Oral Research, 2015

The purpose of this study was to compare the performance of chemomechanical caries removal (CMCR)... more The purpose of this study was to compare the performance of chemomechanical caries removal (CMCR) with that of conventional drilling for efficacy of caries removal, time spent, morphological changes and microhardness of surface dentin, and microleakage of subsequent restorations. Forty-six carious deciduous molars were randomly divided into two groups: one each for caries removal by (1) CMCR and by (2) drilling. The completeness of caries removal was evaluated by visual and tactile criteria and a caries detector device. Twenty teeth in each group were restored with glass ionomer (GI) and subjected to thermocycling before undergoing microleakage and microhardness tests. In each group, three restored teeth were used for polarized light microscopic analysis, and three unrestored teeth for scanning electron microscopy (SEM). There was no significant difference in the completeness of caries removal between groups. However, time spent for caries removal by CMCR was significantly longer than that required for drilling. Restorations in the CMCR group had significantly more microleakage than those in the drilling group. Dentin hardness of the cavity floor after CMCR was also significantly lower. Microscopic analyses showed roughened and irregular dentin surfaces in the CMCR group, unlike the smooth surfaces observed in the drilling group. In conclusion, CMCR was as efficacious as drilling in term of completeness of caries removal, but required longer excavation times and resulted in lower microhardness of residual dentin as well as more microleakage after restorations with GI. Further laboratory and clinical evaluations on the efficiency and performance of CMCR for the durability of subsequent restorations are required.