Iris Slutzky-goldberg - Academia.edu (original) (raw)
Papers by Iris Slutzky-goldberg
Journal of endodontics, Apr 1, 2024
Quintessence International, Apr 1, 2006
Removal of foreign objects from the root canal can be very frustrating. The use of a variety of i... more Removal of foreign objects from the root canal can be very frustrating. The use of a variety of instruments and techniques has been suggested for the retrieval of obstacles from root canals during endodontic treatment. This article describes a method for retrieving a large mass of amalgam restoration that was wedged into the root canal. The amalgam, which had served as the provisional restorative material during apexification of an immature ante rior tooth, was inadvertently pushed into the root canal. After the mass was bypassed, the amalgam was loosened with the aid of copious irrigation, chelation, and flotation. Hedstrom files twisted around the object allowed sufficient grip for its retrieval, enabling completion of the root canal treatment.
Quintessence International, Jul 1, 2009
A C-shaped root canal system is a morphologic anomaly with ethnic group association. 1 This struc... more A C-shaped root canal system is a morphologic anomaly with ethnic group association. 1 This structure can harbor a wide range of anatomic variations and has 2 basic groups: (1) a single ribbonlike morphology from the orifice to the apex and (2) 3 or more distinct canals below the orifice. 1 Maxillary third molars have been described as having variable and complex root and crown morphology. However, PubMed and Google searches for maxillary third molars with C-shaped morphology yielded no results. This report presents an unusual case of root canal treatment in a maxillary third molar with a C-shaped canal system. CASE REPORT A 35-year-old healthy white man was referred for endodontic treatment of the maxillary right third molar. The patient's primary complaints were high sensitivity to cold drinks and episodes of spontaneous pain. Radiographic examination revealed deep caries lesions, conical root configuration, and a periradicular radiolucency (Fig 1). The tooth responded with hypersensitivity to the cold test (Endo-Ice, Hygienic) and was diagnosed with irreversible pulpitis and chronic periradicular periodontitis caused by partial necrosis in a multirooted tooth. A C-shaped morphology was observed under the operating microscope (Fig 2). Working length was determined using an electronic apex locator (Raypex-4, VDW) and confirmed by a radiograph. Cleaning and shaping were supplemented with ultrasonic irrigation with 2.5% sodium hypochlorite. Calcium hydroxide dressing was applied between appointments.
... School of Dental Medicine, Jerusalem, Israel Dr Ronit Maor DMD and Dr Boaz Shay DMD, MSc are ... more ... School of Dental Medicine, Jerusalem, Israel Dr Ronit Maor DMD and Dr Boaz Shay DMD, MSc are both in private practice Dr Benny Peretz DMD is ... Discussion Previous studies used radiographs to assess the accuracy of electronic apex locators in vivo (Dunlap et al, 1998). ...
Journal of Endodontics, 2022
INTRODUCTION Root resorption may occur in traumatized necrotic teeth that have undergone apexific... more INTRODUCTION Root resorption may occur in traumatized necrotic teeth that have undergone apexification following orthodontic treatment. This study examined the effects of orthodontic treatment on the outcome of apexification. METHODS This retrospective study included 36 children presenting with anterior permanent traumatized teeth with immature roots, who were treated by apexification and root canal treatment. The Orthodontic group consisted of 17 children with 24 teeth that were subjected to orthodontic treatment after apexification. The Control group consisted of 19 children with 21 teeth that underwent only apexification without orthodontic treatment. Almost half of the teeth in both groups underwent apexification with calcium hydroxide, whereas the other half were treated with mineral trioxide aggregate. The effects of sex, stage of root development, and apexification material on the outcomes of apexification were analyzed and compared between the two groups. RESULTS Apexification was successful in 88% of cases after at least 5 years of follow-up. Neither apexification technique nor sex had a significant effect on treatment outcome. The stage of root development had a positive effect on outcome, although it was not statistically significant. Some root resorption (average 0.3 mm) was observed after orthodontic treatment, whereas teeth that underwent apexification without orthodontic treatment exhibited some root elongation (average 0.1 mm). This difference was highly significant. CONCLUSIONS Minor root resorption was observed in the Orthodontic group compared to a minor increase in root length in the Control group. Orthodontic movement of immature traumatized teeth after apexification appears to be safe.
Dental Traumatology
AimThe aim of this study is to compare the adverse effects that occur after orthodontic extrusion... more AimThe aim of this study is to compare the adverse effects that occur after orthodontic extrusion of teeth that have been traumatically intruded with those of similar teeth that have not experienced any trauma.BackgroundThe outcome of incisors intrusion can be affected by the patient's age, extent of injury, root development, and malocclusion. Orthodontic extrusion is a potential solution, but it may also cause complications.Materials and MethodsA retrospective study of the effects of extrusion of traumatically intruded teeth was carried out. The study group included 21 teeth in 14 patients. The control group included 32 teeth in 10 patients that underwent orthodontic extrusion with no history of trauma. Patients' age, gender, and stage of root development were recorded. The severity of the intrusion was classified as mild (<3 mm), moderate (3‐6 mm), and severe (≥7 mm). A comparison of signs of pulp necrosis and root resorptions between the groups was made.ResultsThe cent...
International journal of computerized dentistry, 2004
The accuracy of working length determination in root canal treatment plays a crucial role in the ... more The accuracy of working length determination in root canal treatment plays a crucial role in the treatment and prevention of periapical disease. Since the introduction of the first apex locator by Sunada in 1961, new and more accurate devices have been developed. Electronic apex locators reduce the number of radiographs required and may detect root canal perforations and fractures. Third and fourth generation apex locators can operate in the presence of intact or necrotic tissue, blood, inflammatory exudates, and various irrigants. The Raypex 4 and the Apex NRG novel apex locators are discussed in detail.
Refuʾat ha-peh ṿeha-shinayim (1993), 2009
Electronic Apex Locators (EAL) have become widely used in the last decade. The first apex locator... more Electronic Apex Locators (EAL) have become widely used in the last decade. The first apex locator was introduced in 1962, based on a constant electrical resistance (6.5 K.) between the oral mucosa and periodontal ligament. The first and second generations of EAL were inaccurate and could not detect the apex in the presence of conducting fluids. The third generation solved this problem by using two alternating frequencies and calculating the impedance between them. This provided reliable and accurate results in dry canals, or in the presence of blood, electrolytes or other fluid in the root canals, when the pulp was necrotic or when there was a perforation along the root. The Root ZX and Apit (Endex) are the most documented devices. The new fourth generation of apex locators is a diverse group: some use multifrequency currents, others use a "lookup matrix" rather than calculate the readings. Several of the newer EALs are smaller, and others connect to computers.
Refuʾat ha-peh ṿeha-shinayim (1993), 2013
Revascularization has been suggested for treatment of necrotic immature permanent teeth. The desi... more Revascularization has been suggested for treatment of necrotic immature permanent teeth. The desirable outcome of the treatment is continuous growth of the root, maturation of the dentin walls underneath the cervical seal and apical closure. Despite of increasing numbers of case reports, a uniform treatment protocol has not been set. This procedure has many shortcomings of which tooth discoloration is the most prevalent and easy to observe. The severe discoloration is attributed to the use of Mincocycline in the antibiotic dressing, or to the use of MTA for the seal. The maturation of the root is not predictable and does not always occur. The outcome should be evaluated radiographically and clinically. Sensibility testing may not be possible due to the large MTA plug in the root canal. It is recommended only when alternative procedures such as apexificaiton, pulpotomy or pulp capping are impossible. The patient and his parents should be aware of the potential discoloration and must ...
Quintessence international (Berlin, Germany : 1985), Dec 6, 2022
Quintessence, Oct 1, 2007
Retirar objetos extranos del conducto radicular puede ser muy frustrante. Se ha sugerido el uso d... more Retirar objetos extranos del conducto radicular puede ser muy frustrante. Se ha sugerido el uso de diversos instrumentos y tecnicas para la recuperacion de obstaculos de los conductos radiculares durante el tratamiento endodoncico. Este articulo describe un metodo para recuperar una gran masa de obturacion de amalgama que estaba alojada en el conducto radicular: La amalgama, que habia servido de material de restauracion provisional durante la apicoformacion de un diente anterior inmaduro, se introdujo inadvertidamente en el conducto radicular: Despues de circundar la masa de amalgama, se libero con la ayuda de irrigacion copiosa, la quelacion y flotacion. Unas limas de Hedstrom enroscadas alrededor del objeto permitieron una sujecion suficiente para su recuperacion, permitiendo completar el tratamiento del conducto radicular.
Journal of Dentistry and Oral Sciences
Vital pulp therapy (VPT), including direct pulp capping, partial and cervical Pulpotomy, was sugg... more Vital pulp therapy (VPT), including direct pulp capping, partial and cervical Pulpotomy, was suggested for the treatment of young teeth, with reversible or irreversible pulpitis [1]. Maintaining the vitality of immature teeth enables continued root development, maturogenesis, and a better prognosis
Journal of Endodontics, 2008
The purpose of this study was to evaluate the antimicrobial effects of root canal sealers. The di... more The purpose of this study was to evaluate the antimicrobial effects of root canal sealers. The direct contact test (DCT) was used to assess the antibacterial properties of AH plus, Apexit Plus, Epiphany SE, and Roe-koSeal when in contact with Enterococcus faecalis. The materials were examined immediately after setting and 1, 2, 7, and 14 days after aging in phosphate-bufferedsaline. Statistical analysis with two-way analysis of variance, one-way analysis of variance, and Tukey multiple comparison was applied to the data. Apexit Plus had a short-term antibacterial effect of 1 day on E. faecalis, whereas Epiphany SE enhanced bacterial growth for at least 7 days. AH plus and RoekoSeal were ineffective.
Photomedicine and Laser Surgery, 2011
This study aimed to examine the potential synergistic effect of laser and chlorhexidine (CHX) app... more This study aimed to examine the potential synergistic effect of laser and chlorhexidine (CHX) applications on the growth of Enterococcus faecalis. CHX has been recommended for root canal irrigation because of its antibacterial properties. Er:YAG 2.94??m laser irradiation was shown to be beneficial in disinfecting infected root canals. Producing minimal side effects is the goal of any clinical procedure. One means of achieving this is via a synergistic effect caused by simultaneously introducing two applications with reduced dosages, with no compromise on their biological effect. Bacterial suspensions of E. faecalis supplemented with 0.01?0.0001% v/v CHX solutions were lased at energy levels between 300 and 500?mJ. Bacterial growth was continuously monitored for 18?h using a GENios apparatus. Laser irradiation between 350 and 500?mJ delayed initiation of bacterial growth for 6?h. A concentration of 0.0001% CHX did not delay bacteria growth. However, a combination of 0.0001% CHX and laser irradiation had a synergistic effect on bacterial growth. A maximal inhibition period of bacterial growth was observed at energy levels of 500?mJ with 0.0001% CHX. Laser combined with CHX has a synergistic effect in killing E. faecalis. A combined regimen of a low concentration of CHX with laser irradiation was found to be a potential means of inhibiting bacterial growth.
Photomedicine and Laser Surgery, 2008
The purpose of this in vitro study was to determine whether there is a change in dentin permeabil... more The purpose of this in vitro study was to determine whether there is a change in dentin permeability following 9.6-microm CO(2) laser irradiation and high-speed drilling. Twenty permanent, intact, non-carious molars were selected. The crowns were separated from the roots at the cemento-enamel junction. The teeth were randomly divided into two groups, control and experimental, each containing 10 teeth. After class I preparation using a high-speed drill, 9.6-microm CO(2) laser irradiation was applied to dentinal areas only on the experimental group. The samples were soaked in 0.5% methylene blue for 48 h; three independent examiners using scanning electron microscopy evaluated dye penetration through the specimens. The results of the three examiners were similar. There was a significant difference in dye penetration into dentin after laser irradiation versus controls (p &amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt; 0.05). The 9.6-microm CO(2) laser appears to be a promising tool in the clinical setting. However, further investigation is needed to ensure maximum effectiveness.
Journal of Endodontics, 2005
To determine whether the distance between the post and the residual gutta-percha influences the c... more To determine whether the distance between the post and the residual gutta-percha influences the clinical outcome of endodontic treatment, 94 endodontically treated teeth following post and core restoration were evaluated radiographically. The teeth were divided into three groups: (I) no gap between the gutta-percha and the post; (II) a gap of Ͼ0 to 2 mm; (III) a gap of Ͼ2 mm. Treatment outcome was evaluated in follow-up radiographs, taken 1 yr after treatment and up to 5 yr posttreatment. In group I, 83.3% of the teeth were evaluated normal, 53.6% of group II, and only 29.4% of group III. A gap between the gutta-percha and the post was related to an increased rate of emerged disease in endodontically treated teeth restored with a post and core.
Pediatric Dentistry
The optimal treatment for intruded permanent teeth has not yet been determined. The ideal treatme... more The optimal treatment for intruded permanent teeth has not yet been determined. The ideal treatment option is the one with the lowest probability of developing complications such as external root resorption and marginal bone loss. Each case should be considered individually, bearing in mind the severity of the intrusion, the stage of root development, and tooth mobility. Management of an intruded permanent tooth may consist of: (1) observation for spontaneous eruption; (2) surgical crown uncovering; (3) orthodontic extrusion (with or without prior luxation of the intruded tooth); (4) and partial surgical extrusion, immediately followed by orthodontic extrusion and surgical repositioning. The purpose of this article was to review the treatment options for intruded immature permanent incisors, and to present a new modality of an elective internal strengthening of the immature root weakened by external root resorption. A case of an intrusive luxation injury in a 7 1/2-year-old child an...
Coronal restorations and posts can positively influence the long-term prognosis of teeth followin... more Coronal restorations and posts can positively influence the long-term prognosis of teeth following root canal therapy. Final sealing the canal by placing an appropriate post and core will minimize leakage of oral fluids and bacteria into the periradicular area and is recommended as soon as possible after completion of root canal filling. Glass ionomer or MTA placed over the residual root canal filling after post space preparation may be effective to prevent bacterial leakage. A ferrule of 1-2 mm of tooth tissue coronal to the finish line of the crown significantly improves the fracture resistance of the tooth and is more important than the type of the materialthecoreandpostaremadeof. Copyright © 2009 Iris Slutzky-Goldberg et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. 1.
Journal of endodontics, Apr 1, 2024
Quintessence International, Apr 1, 2006
Removal of foreign objects from the root canal can be very frustrating. The use of a variety of i... more Removal of foreign objects from the root canal can be very frustrating. The use of a variety of instruments and techniques has been suggested for the retrieval of obstacles from root canals during endodontic treatment. This article describes a method for retrieving a large mass of amalgam restoration that was wedged into the root canal. The amalgam, which had served as the provisional restorative material during apexification of an immature ante rior tooth, was inadvertently pushed into the root canal. After the mass was bypassed, the amalgam was loosened with the aid of copious irrigation, chelation, and flotation. Hedstrom files twisted around the object allowed sufficient grip for its retrieval, enabling completion of the root canal treatment.
Quintessence International, Jul 1, 2009
A C-shaped root canal system is a morphologic anomaly with ethnic group association. 1 This struc... more A C-shaped root canal system is a morphologic anomaly with ethnic group association. 1 This structure can harbor a wide range of anatomic variations and has 2 basic groups: (1) a single ribbonlike morphology from the orifice to the apex and (2) 3 or more distinct canals below the orifice. 1 Maxillary third molars have been described as having variable and complex root and crown morphology. However, PubMed and Google searches for maxillary third molars with C-shaped morphology yielded no results. This report presents an unusual case of root canal treatment in a maxillary third molar with a C-shaped canal system. CASE REPORT A 35-year-old healthy white man was referred for endodontic treatment of the maxillary right third molar. The patient's primary complaints were high sensitivity to cold drinks and episodes of spontaneous pain. Radiographic examination revealed deep caries lesions, conical root configuration, and a periradicular radiolucency (Fig 1). The tooth responded with hypersensitivity to the cold test (Endo-Ice, Hygienic) and was diagnosed with irreversible pulpitis and chronic periradicular periodontitis caused by partial necrosis in a multirooted tooth. A C-shaped morphology was observed under the operating microscope (Fig 2). Working length was determined using an electronic apex locator (Raypex-4, VDW) and confirmed by a radiograph. Cleaning and shaping were supplemented with ultrasonic irrigation with 2.5% sodium hypochlorite. Calcium hydroxide dressing was applied between appointments.
... School of Dental Medicine, Jerusalem, Israel Dr Ronit Maor DMD and Dr Boaz Shay DMD, MSc are ... more ... School of Dental Medicine, Jerusalem, Israel Dr Ronit Maor DMD and Dr Boaz Shay DMD, MSc are both in private practice Dr Benny Peretz DMD is ... Discussion Previous studies used radiographs to assess the accuracy of electronic apex locators in vivo (Dunlap et al, 1998). ...
Journal of Endodontics, 2022
INTRODUCTION Root resorption may occur in traumatized necrotic teeth that have undergone apexific... more INTRODUCTION Root resorption may occur in traumatized necrotic teeth that have undergone apexification following orthodontic treatment. This study examined the effects of orthodontic treatment on the outcome of apexification. METHODS This retrospective study included 36 children presenting with anterior permanent traumatized teeth with immature roots, who were treated by apexification and root canal treatment. The Orthodontic group consisted of 17 children with 24 teeth that were subjected to orthodontic treatment after apexification. The Control group consisted of 19 children with 21 teeth that underwent only apexification without orthodontic treatment. Almost half of the teeth in both groups underwent apexification with calcium hydroxide, whereas the other half were treated with mineral trioxide aggregate. The effects of sex, stage of root development, and apexification material on the outcomes of apexification were analyzed and compared between the two groups. RESULTS Apexification was successful in 88% of cases after at least 5 years of follow-up. Neither apexification technique nor sex had a significant effect on treatment outcome. The stage of root development had a positive effect on outcome, although it was not statistically significant. Some root resorption (average 0.3 mm) was observed after orthodontic treatment, whereas teeth that underwent apexification without orthodontic treatment exhibited some root elongation (average 0.1 mm). This difference was highly significant. CONCLUSIONS Minor root resorption was observed in the Orthodontic group compared to a minor increase in root length in the Control group. Orthodontic movement of immature traumatized teeth after apexification appears to be safe.
Dental Traumatology
AimThe aim of this study is to compare the adverse effects that occur after orthodontic extrusion... more AimThe aim of this study is to compare the adverse effects that occur after orthodontic extrusion of teeth that have been traumatically intruded with those of similar teeth that have not experienced any trauma.BackgroundThe outcome of incisors intrusion can be affected by the patient's age, extent of injury, root development, and malocclusion. Orthodontic extrusion is a potential solution, but it may also cause complications.Materials and MethodsA retrospective study of the effects of extrusion of traumatically intruded teeth was carried out. The study group included 21 teeth in 14 patients. The control group included 32 teeth in 10 patients that underwent orthodontic extrusion with no history of trauma. Patients' age, gender, and stage of root development were recorded. The severity of the intrusion was classified as mild (<3 mm), moderate (3‐6 mm), and severe (≥7 mm). A comparison of signs of pulp necrosis and root resorptions between the groups was made.ResultsThe cent...
International journal of computerized dentistry, 2004
The accuracy of working length determination in root canal treatment plays a crucial role in the ... more The accuracy of working length determination in root canal treatment plays a crucial role in the treatment and prevention of periapical disease. Since the introduction of the first apex locator by Sunada in 1961, new and more accurate devices have been developed. Electronic apex locators reduce the number of radiographs required and may detect root canal perforations and fractures. Third and fourth generation apex locators can operate in the presence of intact or necrotic tissue, blood, inflammatory exudates, and various irrigants. The Raypex 4 and the Apex NRG novel apex locators are discussed in detail.
Refuʾat ha-peh ṿeha-shinayim (1993), 2009
Electronic Apex Locators (EAL) have become widely used in the last decade. The first apex locator... more Electronic Apex Locators (EAL) have become widely used in the last decade. The first apex locator was introduced in 1962, based on a constant electrical resistance (6.5 K.) between the oral mucosa and periodontal ligament. The first and second generations of EAL were inaccurate and could not detect the apex in the presence of conducting fluids. The third generation solved this problem by using two alternating frequencies and calculating the impedance between them. This provided reliable and accurate results in dry canals, or in the presence of blood, electrolytes or other fluid in the root canals, when the pulp was necrotic or when there was a perforation along the root. The Root ZX and Apit (Endex) are the most documented devices. The new fourth generation of apex locators is a diverse group: some use multifrequency currents, others use a "lookup matrix" rather than calculate the readings. Several of the newer EALs are smaller, and others connect to computers.
Refuʾat ha-peh ṿeha-shinayim (1993), 2013
Revascularization has been suggested for treatment of necrotic immature permanent teeth. The desi... more Revascularization has been suggested for treatment of necrotic immature permanent teeth. The desirable outcome of the treatment is continuous growth of the root, maturation of the dentin walls underneath the cervical seal and apical closure. Despite of increasing numbers of case reports, a uniform treatment protocol has not been set. This procedure has many shortcomings of which tooth discoloration is the most prevalent and easy to observe. The severe discoloration is attributed to the use of Mincocycline in the antibiotic dressing, or to the use of MTA for the seal. The maturation of the root is not predictable and does not always occur. The outcome should be evaluated radiographically and clinically. Sensibility testing may not be possible due to the large MTA plug in the root canal. It is recommended only when alternative procedures such as apexificaiton, pulpotomy or pulp capping are impossible. The patient and his parents should be aware of the potential discoloration and must ...
Quintessence international (Berlin, Germany : 1985), Dec 6, 2022
Quintessence, Oct 1, 2007
Retirar objetos extranos del conducto radicular puede ser muy frustrante. Se ha sugerido el uso d... more Retirar objetos extranos del conducto radicular puede ser muy frustrante. Se ha sugerido el uso de diversos instrumentos y tecnicas para la recuperacion de obstaculos de los conductos radiculares durante el tratamiento endodoncico. Este articulo describe un metodo para recuperar una gran masa de obturacion de amalgama que estaba alojada en el conducto radicular: La amalgama, que habia servido de material de restauracion provisional durante la apicoformacion de un diente anterior inmaduro, se introdujo inadvertidamente en el conducto radicular: Despues de circundar la masa de amalgama, se libero con la ayuda de irrigacion copiosa, la quelacion y flotacion. Unas limas de Hedstrom enroscadas alrededor del objeto permitieron una sujecion suficiente para su recuperacion, permitiendo completar el tratamiento del conducto radicular.
Journal of Dentistry and Oral Sciences
Vital pulp therapy (VPT), including direct pulp capping, partial and cervical Pulpotomy, was sugg... more Vital pulp therapy (VPT), including direct pulp capping, partial and cervical Pulpotomy, was suggested for the treatment of young teeth, with reversible or irreversible pulpitis [1]. Maintaining the vitality of immature teeth enables continued root development, maturogenesis, and a better prognosis
Journal of Endodontics, 2008
The purpose of this study was to evaluate the antimicrobial effects of root canal sealers. The di... more The purpose of this study was to evaluate the antimicrobial effects of root canal sealers. The direct contact test (DCT) was used to assess the antibacterial properties of AH plus, Apexit Plus, Epiphany SE, and Roe-koSeal when in contact with Enterococcus faecalis. The materials were examined immediately after setting and 1, 2, 7, and 14 days after aging in phosphate-bufferedsaline. Statistical analysis with two-way analysis of variance, one-way analysis of variance, and Tukey multiple comparison was applied to the data. Apexit Plus had a short-term antibacterial effect of 1 day on E. faecalis, whereas Epiphany SE enhanced bacterial growth for at least 7 days. AH plus and RoekoSeal were ineffective.
Photomedicine and Laser Surgery, 2011
This study aimed to examine the potential synergistic effect of laser and chlorhexidine (CHX) app... more This study aimed to examine the potential synergistic effect of laser and chlorhexidine (CHX) applications on the growth of Enterococcus faecalis. CHX has been recommended for root canal irrigation because of its antibacterial properties. Er:YAG 2.94??m laser irradiation was shown to be beneficial in disinfecting infected root canals. Producing minimal side effects is the goal of any clinical procedure. One means of achieving this is via a synergistic effect caused by simultaneously introducing two applications with reduced dosages, with no compromise on their biological effect. Bacterial suspensions of E. faecalis supplemented with 0.01?0.0001% v/v CHX solutions were lased at energy levels between 300 and 500?mJ. Bacterial growth was continuously monitored for 18?h using a GENios apparatus. Laser irradiation between 350 and 500?mJ delayed initiation of bacterial growth for 6?h. A concentration of 0.0001% CHX did not delay bacteria growth. However, a combination of 0.0001% CHX and laser irradiation had a synergistic effect on bacterial growth. A maximal inhibition period of bacterial growth was observed at energy levels of 500?mJ with 0.0001% CHX. Laser combined with CHX has a synergistic effect in killing E. faecalis. A combined regimen of a low concentration of CHX with laser irradiation was found to be a potential means of inhibiting bacterial growth.
Photomedicine and Laser Surgery, 2008
The purpose of this in vitro study was to determine whether there is a change in dentin permeabil... more The purpose of this in vitro study was to determine whether there is a change in dentin permeability following 9.6-microm CO(2) laser irradiation and high-speed drilling. Twenty permanent, intact, non-carious molars were selected. The crowns were separated from the roots at the cemento-enamel junction. The teeth were randomly divided into two groups, control and experimental, each containing 10 teeth. After class I preparation using a high-speed drill, 9.6-microm CO(2) laser irradiation was applied to dentinal areas only on the experimental group. The samples were soaked in 0.5% methylene blue for 48 h; three independent examiners using scanning electron microscopy evaluated dye penetration through the specimens. The results of the three examiners were similar. There was a significant difference in dye penetration into dentin after laser irradiation versus controls (p &amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt; 0.05). The 9.6-microm CO(2) laser appears to be a promising tool in the clinical setting. However, further investigation is needed to ensure maximum effectiveness.
Journal of Endodontics, 2005
To determine whether the distance between the post and the residual gutta-percha influences the c... more To determine whether the distance between the post and the residual gutta-percha influences the clinical outcome of endodontic treatment, 94 endodontically treated teeth following post and core restoration were evaluated radiographically. The teeth were divided into three groups: (I) no gap between the gutta-percha and the post; (II) a gap of Ͼ0 to 2 mm; (III) a gap of Ͼ2 mm. Treatment outcome was evaluated in follow-up radiographs, taken 1 yr after treatment and up to 5 yr posttreatment. In group I, 83.3% of the teeth were evaluated normal, 53.6% of group II, and only 29.4% of group III. A gap between the gutta-percha and the post was related to an increased rate of emerged disease in endodontically treated teeth restored with a post and core.
Pediatric Dentistry
The optimal treatment for intruded permanent teeth has not yet been determined. The ideal treatme... more The optimal treatment for intruded permanent teeth has not yet been determined. The ideal treatment option is the one with the lowest probability of developing complications such as external root resorption and marginal bone loss. Each case should be considered individually, bearing in mind the severity of the intrusion, the stage of root development, and tooth mobility. Management of an intruded permanent tooth may consist of: (1) observation for spontaneous eruption; (2) surgical crown uncovering; (3) orthodontic extrusion (with or without prior luxation of the intruded tooth); (4) and partial surgical extrusion, immediately followed by orthodontic extrusion and surgical repositioning. The purpose of this article was to review the treatment options for intruded immature permanent incisors, and to present a new modality of an elective internal strengthening of the immature root weakened by external root resorption. A case of an intrusive luxation injury in a 7 1/2-year-old child an...
Coronal restorations and posts can positively influence the long-term prognosis of teeth followin... more Coronal restorations and posts can positively influence the long-term prognosis of teeth following root canal therapy. Final sealing the canal by placing an appropriate post and core will minimize leakage of oral fluids and bacteria into the periradicular area and is recommended as soon as possible after completion of root canal filling. Glass ionomer or MTA placed over the residual root canal filling after post space preparation may be effective to prevent bacterial leakage. A ferrule of 1-2 mm of tooth tissue coronal to the finish line of the crown significantly improves the fracture resistance of the tooth and is more important than the type of the materialthecoreandpostaremadeof. Copyright © 2009 Iris Slutzky-Goldberg et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. 1.