Vidya Chitre - Academia.edu (original) (raw)

Papers by Vidya Chitre

Oral health goals (2020) aims not only to increase the percentage of population with availability... more Oral health goals (2020) aims not only to increase the percentage of population with availability to oral health care but also to provide adequate information regarding oral health care. Examination of a patient with dental prosthesis can help to provide valuable information regarding denture care and maintenance by geriatric patients (2)

Case Report Abstract Cranial defects may result from trauma, disease, and congenital malformation... more Case Report Abstract Cranial defects may result from trauma, disease, and congenital malformations. Repair of cranial defects is indicated to protect underlying brain tissue, provide pain relief at the defect site, improve cosmesis, and minimize patient anxiety. Cranioplasty is accomplished either with osteoplastic reconstruction or restoration with alloplastic implants. Cranial alloplastic implant materials used include metal, acrylic resin, polyethylene, and silicone. As an ever increasing number of expensive biomaterials for bone replacement have become available PMMA remains a cheap and readily available option that is potentially under used. There are no long term studies or case series published with the use of heat cure PMMA to the best of our knowledge. This case report describes the rehabilitation of a cranial defect using heat cure polymethacrylate resin with a novel impression technique to develop the external contour of the defect using modelling clay.

The Journal of Indian Prosthodontic Society, 2018

External maxillofacial prosthesis, restore anatomically, functionally, and cosmetically the regio... more External maxillofacial prosthesis, restore anatomically, functionally, and cosmetically the regions of the maxilla, mandible, or face, which are missing or altered by disease, accident, or congenitally malformed. [1] Silicone materials have become the materials of choice for the fabrication of facial prostheses. [2] Two major drawbacks associated with maxillofacial silicones are the degradation of physical properties and discoloration of the prostheses in a service environment. [2-5] The wearing time for facial prostheses averages only from 3 months to 1 year, as they undergo major alterations in Purpose: The purpose of this study was to assess and compare the effect of the simulated Indian and Mediterranean climates on the Shore A hardness of a commercially available nonpigmented room temperature vulcanizing maxillofacial silicone. Materials and Methods: Sixty specimens were fabricated from A-2000 silicone material (Factor II), using a stainless steel mold of dimension 20 mm × 2 mm. The initial Shore A hardness was noted using a digital durometer. Thirty samples were subjected to the simulated Mediterranean climate (Group I), and the remaining thirty samples were subjected to the Indian tropical climate (Group II) in an accelerated weather chamber to simulate 1 year of clinical use. Final Shore A hardness was noted. A one-way ANOVA and Bonferroni post hoc tests were performed for the Shore A hardness at P < 0.05. Results: The mean initial Shore A hardness for both the groups was 24.9833. After accelerated weathering, Group I showed mean Shore A hardness of 33.0000 whereas Group II showed mean Shore A hardness of 38.0000. Conclusions: The Shore A hardness of Factor II, before and after accelerated artificial weathering, was statistically significant at 0.05 level (P < 0.05).The change in Shore A hardness was greater in the simulated tropical climate group (Group II) as compared to the simulated Mediterranean climate group (Group I) but within clinical limits.

The forces of mastication that are applied to a tooth on a denture are transmitted directly to th... more The forces of mastication that are applied to a tooth on a denture are transmitted directly to the supporting tissues. These traumatic forces are one of the main causes of residual ridge resorption. This article describes a case report of a 64-year edentulous female patient with severely resorbed mandibular ridge where a novel technique was used by incorporating a permanent heat cure soft acrylic resin liner (Super soft) between denture teeth and denture base which acts as a 'stress distributor'.

International Journal of Prosthodontics & Restorative Dentistry, 2017

Aim: Closed hollow obturators are often fabricated to provide adequate retention, stability and c... more Aim: Closed hollow obturators are often fabricated to provide adequate retention, stability and comfort for the patient. Background: Rehabilitation of patient with maxillary obturator is the most common treatment option after maxillectomy. However, the heavy weight of obturator often leads to discomfort and problem in its retention. Case report: This article presents rehabilitation of a patient after the surgical removal of desmoplastic ameloblastoma. It employs a simple procedure to create a closed hollow obturator with uniform and adequate thickness of prosthesis wall. Conclusion: The technique offers advantage since it is easily fabricated with routinely used materials in a short time.

Journal of Research in Dentistry, 2016

Aim: The present paper aims to review the literature available on various approaches to salivary ... more Aim: The present paper aims to review the literature available on various approaches to salivary reservoir designs, the functional aspects, cleansibility, type of attachments used, and different techniques used for the fabrication of salivary reservoirs in patients suffering from xerostomia.Material and Methods: A search in the National Library of Medicine’s Pub Med database, Google search and Science Direct was performed to include all case reports and reviews on prosthodontic rehabilitation of dentulous/partially edentulous/edentulous patient with xerostomia.Results: Out of the 35 articles found in the database search, 18 articles were included based on the designs they adopted for fabrication of salivary reservoirs.Conclusions: The various designs available in literature enable an operator to choose the most suitable reservoir design based on specific patient requirements. Innovations in reservoir design promise a more customized prosthesis for every patient. Further research and...

Journal of Indian Prosthodontic Society

The loss of an eye is an emotional and psychological setback to the patient. An ocular prosthesis... more The loss of an eye is an emotional and psychological setback to the patient. An ocular prosthesis is created to restore the lost anatomical structure and to correct the cosmetic defect. The tear reflexes do not function at optimal levels in anophthalmic sockets which make prosthesis wear uncomfortable. This case report presents an innovative hollow ocular prosthesis with functional lubricant reservoir which upon normal blinking would draw the lubricant from the reservoir through an exit hole which spreads over the prosthesis allowing a comfortable and long duration of prosthesis wear.

Journal of prosthodontics : official journal of the American College of Prosthodontists, Jan 6, 2017

The success of removable prostheses ultimately depends on a number of factors such as retention, ... more The success of removable prostheses ultimately depends on a number of factors such as retention, stability, support, esthetics, and masticatory function. Increased intraoral inter-arch distance leads to an increase in the weight of the prosthesis. This may compromise the retention and resistance, which are key for a successful removable prosthesis. Various methods, techniques, and materials have been reported to minimize the weight of a prosthesis. This article describes a simple, unique, precise single-flask technique for the fabrication of a lightweight maxillary prosthesis using caramel as a 3D spacer, which was "indexed" to obtain a uniform thickness of acrylic around the hollow cavity.

JOURNAL OF CLINICAL AND DIAGNOSTIC RESEARCH, 2016

with the chief complaint of difficulty in eating and speaking due to teeth loss. History revealed... more with the chief complaint of difficulty in eating and speaking due to teeth loss. History revealed that he had lost his teeth due to periodontal involvement and had been edentulous for eight years.

The Journal of Indian Prosthodontic Society, 2008

The crown and sleeve coping denture is a removable prosthesis that is supported by both selective... more The crown and sleeve coping denture is a removable prosthesis that is supported by both selectively retained teeth and the residual ridge or mucosa. It is a versatile and successful means of achieving the long-term restoration of the partially edentulous jaw. Insertion and removal of the denture and routine oral hygiene are easy to perform. The benefi cial results of this form of treatment can be considered for a whole variety of clinical applications for the severely advanced periodontitis case. This paper presents a case report on the prosthetic rehabilitation of a partially edentulous patient with a combined fi xed-removable denture for the maxilla and a fl exible denture for the mandible.

The Journal of Indian Prosthodontic Society, 2013

Overdenture is a favored treatment modality for elderly patients with few remaining teeth. Roots ... more Overdenture is a favored treatment modality for elderly patients with few remaining teeth. Roots maintained under the denture base preserve the alveolar ridge, provide sensory feedback and improve the stability of the dentures. Furthermore, the use of copings and precision attachments on the remaining teeth enhances the retention of the denture. This clinical report describes a novel method of fabricating a tooth supported overdenture retained with custom made ball attachments using orthodontic separators as a female component. Customized ball attachments with orthodontic separators are a simple and cost effective alternative treatment to the use of prefabricated attachments for enhancing the retention of tooth supported overdentures.

JOURNAL OF CLINICAL AND DIAGNOSTIC RESEARCH, 2015

The Journal of Indian Prosthodontic Society, 2008

Water can be used as a saliva replacement, but it is not adequately effective in moistening and l... more Water can be used as a saliva replacement, but it is not adequately effective in moistening and lubricating the oral mucosa. Good wetting of the denture base material by the saliva substitute is critical for optimum retention of the upper complete dentures. PURPOSE: The purpose of the study was to compare wettability of distilled water and four saliva substitutes on DPI heat cure acrylic resin. MATERIALS AND METHODS: A total of 200 heat-cured acrylic samples were prepared of dimensions 2.5 × 1.5 × 2 mm. They were divided into fi ve groups (40 samples in each group), and advancing and receding contact angles were measured using contact angle goniometer. RESULTS: The obtained values for advancing and receding contact angle and the resultant value of angle of hysteresis were subjected to statistical analysis. ANOVA was performed, which showed statistically signifi cant values. CONCLUSION: The wettability of saliva substitute aqwet was found to be better as compared to other saliva substitutes and distilled water on heat-cured acrylic resin used in the study.

The Journal of Indian Prosthodontic Society, 2012

Emphasis on facial esthetics has become an integral part of dental treatment. Prosthetic rehabili... more Emphasis on facial esthetics has become an integral part of dental treatment. Prosthetic rehabilitation of a completely edentulous patient no longer confines to only replacement of missing teeth. Patients are increasingly demanding improvement in esthetics at the end of treatment. Slumped or hollow cheeks can add years to a person's age. This article has described a simple, effective and noninvasive treatment alternative to improve facial appearance in a completely edentulous patient with hollow cheeks by making use of detachable plumper prosthesis using customised attachments. keywords Hollow cheeks Á Cheek plumper Á Customised attachments Á Detachable attachments Á Complete denture Á Separators

The Journal of Indian Prosthodontic Society, 2013

There is much discussion in the dental literature regarding the superiority of one impression tec... more There is much discussion in the dental literature regarding the superiority of one impression technique over the other using addition silicone impression material. However, there is inadequate information available on the accuracy of different impression techniques using polyether. The purpose of this study was to assess the linear dimensional accuracy of four impression techniques using polyether on a laboratory model that simulates clinical practice. The impression material used was Impregum Soft TM , 3 M ESPE and the four impression techniques used were (1) Monophase impression technique using medium body impression material. (2) One step double mix impression technique using heavy body and light body impression materials simultaneously. (3) Two step double mix impression technique using a cellophane spacer (heavy body material used as a preliminary impression to create a wash space with a cellophane spacer, followed by the use of light body material). (4) Matrix impression using a matrix of polyether occlusal registration material. The matrix is loaded with heavy body material followed by a pickup impression in medium body material. For each technique, thirty impressions were made of a stainless steel master model that contained three complete crown abutment preparations, which were used as the positive control. Accuracy was assessed by measuring eight dimensions (mesiodistal, faciolingual and inter-abutment) on stone dies poured from impressions of the master model. A two-tailed t test was carried out to test the significance in difference of the distances between the master model and the stone models. One way analysis of variance (ANOVA) was used for multiple group comparison followed by the Bonferroni's test for pair wise comparison. The accuracy was tested at a = 0.05. In general, polyether impression material produced stone dies that were smaller except for the dies produced from the one step double mix impression technique. The ANOVA revealed a highly significant difference for each dimension measured (except for the interabutment distance between the first and the second die) between any two groups of stone models obtained from the four impression techniques. Pair wise comparison for each measurement did not reveal any significant difference (except for the faciolingual distance of the third die) between the casts produced using the two step double mix impression technique and the matrix impression system. The two step double mix impression technique produced stone dies that showed the least dimensional variation. During fabrication of a cast restoration, laboratory procedures should not only compensate for the cement thickness, but also for the increase or decrease in die dimensions.

The Journal of Indian Prosthodontic Society, 2007

ABSTRACT

The Journal of Indian Prosthodontic Society, 2013

Loss of an eye can cause a significant psychological and emotional disturbance to any patient. An... more Loss of an eye can cause a significant psychological and emotional disturbance to any patient. An ocular prosthesis helps to re-establish the physical and mental well-being of the patient. This article describes a novel technique along with a case report for fabricating a predictable, esthetic and well-fitting custom-made ocular prosthesis in an attempt to avoid costly and time consuming procedures that may be required in other methods.

International Journal of Prosthodontics and Restorative Dentistry, 2013

Indian Journal of Dental Research, 2012

Chlorhexidine is commonly used in dentistry in various forms. Allergic reactions to chlorhexidine... more Chlorhexidine is commonly used in dentistry in various forms. Allergic reactions to chlorhexidine of both immediate and delayed type have been reported. Although the incidence is low there may be severe manifestations in some patients. This report presents a case of allergy to chlorhexidine following topical application.

Indian Journal of Dental Research, 2012

Background: Traditionally, inlay casting waxes have been used to fabricate patterns for castings.... more Background: Traditionally, inlay casting waxes have been used to fabricate patterns for castings. Newer resin pattern materials offer greater rigidity and strength, allowing easier laboratory and intraoral adjustment without the fear of pattern damage. They also claim to possess a greater dimensional stability when compared to inlay wax. Aims: This study attempted to determine and compare the marginal accuracy of patterns fabricated from an inlay casting wax, an autopolymerized pattern resin and a light polymerized pattern resin on storage off the die for varying time intervals. Materials and Methods: Ten patterns each were fabricated from an inlay casting wax (GC Corp., Tokyo, Japan), an autopolymerized resin pattern material (Pattern resin, GC Corp, Tokyo, Japan) and a light-cured resin pattern material (Palavit GLC, Hereaus Kulzer GmbH, Germany). The completed patterns were stored off the die at room temperature. Marginal gaps were evaluated by reseating the patterns on their respective dies and observing it under a stereomicroscope at 1, 12, and 24 h intervals after pattern fabrication. Results: The results revealed that the inlay wax showed a significantly greater marginal discrepancy at the 12 and 24 h intervals. The autopolymerized resin showed an initial (at 1 h) marginal discrepancy slightly greater than inlay wax, but showed a significantly less marginal gap (as compared to inlay wax) at the other two time intervals. The light-cured resin proved to be significantly more dimensionally stable, and showed minimal change during the storage period. Conclusion: The resin pattern materials studied, undergo a significantly less dimensional change than the inlay waxes on prolonged storage. They would possibly be a better alternative to inlay wax in situations requiring high precision or when delayed investment (more than 1 h) of patterns can be expected.

Oral health goals (2020) aims not only to increase the percentage of population with availability... more Oral health goals (2020) aims not only to increase the percentage of population with availability to oral health care but also to provide adequate information regarding oral health care. Examination of a patient with dental prosthesis can help to provide valuable information regarding denture care and maintenance by geriatric patients (2)

Case Report Abstract Cranial defects may result from trauma, disease, and congenital malformation... more Case Report Abstract Cranial defects may result from trauma, disease, and congenital malformations. Repair of cranial defects is indicated to protect underlying brain tissue, provide pain relief at the defect site, improve cosmesis, and minimize patient anxiety. Cranioplasty is accomplished either with osteoplastic reconstruction or restoration with alloplastic implants. Cranial alloplastic implant materials used include metal, acrylic resin, polyethylene, and silicone. As an ever increasing number of expensive biomaterials for bone replacement have become available PMMA remains a cheap and readily available option that is potentially under used. There are no long term studies or case series published with the use of heat cure PMMA to the best of our knowledge. This case report describes the rehabilitation of a cranial defect using heat cure polymethacrylate resin with a novel impression technique to develop the external contour of the defect using modelling clay.

The Journal of Indian Prosthodontic Society, 2018

External maxillofacial prosthesis, restore anatomically, functionally, and cosmetically the regio... more External maxillofacial prosthesis, restore anatomically, functionally, and cosmetically the regions of the maxilla, mandible, or face, which are missing or altered by disease, accident, or congenitally malformed. [1] Silicone materials have become the materials of choice for the fabrication of facial prostheses. [2] Two major drawbacks associated with maxillofacial silicones are the degradation of physical properties and discoloration of the prostheses in a service environment. [2-5] The wearing time for facial prostheses averages only from 3 months to 1 year, as they undergo major alterations in Purpose: The purpose of this study was to assess and compare the effect of the simulated Indian and Mediterranean climates on the Shore A hardness of a commercially available nonpigmented room temperature vulcanizing maxillofacial silicone. Materials and Methods: Sixty specimens were fabricated from A-2000 silicone material (Factor II), using a stainless steel mold of dimension 20 mm × 2 mm. The initial Shore A hardness was noted using a digital durometer. Thirty samples were subjected to the simulated Mediterranean climate (Group I), and the remaining thirty samples were subjected to the Indian tropical climate (Group II) in an accelerated weather chamber to simulate 1 year of clinical use. Final Shore A hardness was noted. A one-way ANOVA and Bonferroni post hoc tests were performed for the Shore A hardness at P < 0.05. Results: The mean initial Shore A hardness for both the groups was 24.9833. After accelerated weathering, Group I showed mean Shore A hardness of 33.0000 whereas Group II showed mean Shore A hardness of 38.0000. Conclusions: The Shore A hardness of Factor II, before and after accelerated artificial weathering, was statistically significant at 0.05 level (P < 0.05).The change in Shore A hardness was greater in the simulated tropical climate group (Group II) as compared to the simulated Mediterranean climate group (Group I) but within clinical limits.

The forces of mastication that are applied to a tooth on a denture are transmitted directly to th... more The forces of mastication that are applied to a tooth on a denture are transmitted directly to the supporting tissues. These traumatic forces are one of the main causes of residual ridge resorption. This article describes a case report of a 64-year edentulous female patient with severely resorbed mandibular ridge where a novel technique was used by incorporating a permanent heat cure soft acrylic resin liner (Super soft) between denture teeth and denture base which acts as a 'stress distributor'.

International Journal of Prosthodontics & Restorative Dentistry, 2017

Aim: Closed hollow obturators are often fabricated to provide adequate retention, stability and c... more Aim: Closed hollow obturators are often fabricated to provide adequate retention, stability and comfort for the patient. Background: Rehabilitation of patient with maxillary obturator is the most common treatment option after maxillectomy. However, the heavy weight of obturator often leads to discomfort and problem in its retention. Case report: This article presents rehabilitation of a patient after the surgical removal of desmoplastic ameloblastoma. It employs a simple procedure to create a closed hollow obturator with uniform and adequate thickness of prosthesis wall. Conclusion: The technique offers advantage since it is easily fabricated with routinely used materials in a short time.

Journal of Research in Dentistry, 2016

Aim: The present paper aims to review the literature available on various approaches to salivary ... more Aim: The present paper aims to review the literature available on various approaches to salivary reservoir designs, the functional aspects, cleansibility, type of attachments used, and different techniques used for the fabrication of salivary reservoirs in patients suffering from xerostomia.Material and Methods: A search in the National Library of Medicine’s Pub Med database, Google search and Science Direct was performed to include all case reports and reviews on prosthodontic rehabilitation of dentulous/partially edentulous/edentulous patient with xerostomia.Results: Out of the 35 articles found in the database search, 18 articles were included based on the designs they adopted for fabrication of salivary reservoirs.Conclusions: The various designs available in literature enable an operator to choose the most suitable reservoir design based on specific patient requirements. Innovations in reservoir design promise a more customized prosthesis for every patient. Further research and...

Journal of Indian Prosthodontic Society

The loss of an eye is an emotional and psychological setback to the patient. An ocular prosthesis... more The loss of an eye is an emotional and psychological setback to the patient. An ocular prosthesis is created to restore the lost anatomical structure and to correct the cosmetic defect. The tear reflexes do not function at optimal levels in anophthalmic sockets which make prosthesis wear uncomfortable. This case report presents an innovative hollow ocular prosthesis with functional lubricant reservoir which upon normal blinking would draw the lubricant from the reservoir through an exit hole which spreads over the prosthesis allowing a comfortable and long duration of prosthesis wear.

Journal of prosthodontics : official journal of the American College of Prosthodontists, Jan 6, 2017

The success of removable prostheses ultimately depends on a number of factors such as retention, ... more The success of removable prostheses ultimately depends on a number of factors such as retention, stability, support, esthetics, and masticatory function. Increased intraoral inter-arch distance leads to an increase in the weight of the prosthesis. This may compromise the retention and resistance, which are key for a successful removable prosthesis. Various methods, techniques, and materials have been reported to minimize the weight of a prosthesis. This article describes a simple, unique, precise single-flask technique for the fabrication of a lightweight maxillary prosthesis using caramel as a 3D spacer, which was "indexed" to obtain a uniform thickness of acrylic around the hollow cavity.

JOURNAL OF CLINICAL AND DIAGNOSTIC RESEARCH, 2016

with the chief complaint of difficulty in eating and speaking due to teeth loss. History revealed... more with the chief complaint of difficulty in eating and speaking due to teeth loss. History revealed that he had lost his teeth due to periodontal involvement and had been edentulous for eight years.

The Journal of Indian Prosthodontic Society, 2008

The crown and sleeve coping denture is a removable prosthesis that is supported by both selective... more The crown and sleeve coping denture is a removable prosthesis that is supported by both selectively retained teeth and the residual ridge or mucosa. It is a versatile and successful means of achieving the long-term restoration of the partially edentulous jaw. Insertion and removal of the denture and routine oral hygiene are easy to perform. The benefi cial results of this form of treatment can be considered for a whole variety of clinical applications for the severely advanced periodontitis case. This paper presents a case report on the prosthetic rehabilitation of a partially edentulous patient with a combined fi xed-removable denture for the maxilla and a fl exible denture for the mandible.

The Journal of Indian Prosthodontic Society, 2013

Overdenture is a favored treatment modality for elderly patients with few remaining teeth. Roots ... more Overdenture is a favored treatment modality for elderly patients with few remaining teeth. Roots maintained under the denture base preserve the alveolar ridge, provide sensory feedback and improve the stability of the dentures. Furthermore, the use of copings and precision attachments on the remaining teeth enhances the retention of the denture. This clinical report describes a novel method of fabricating a tooth supported overdenture retained with custom made ball attachments using orthodontic separators as a female component. Customized ball attachments with orthodontic separators are a simple and cost effective alternative treatment to the use of prefabricated attachments for enhancing the retention of tooth supported overdentures.

JOURNAL OF CLINICAL AND DIAGNOSTIC RESEARCH, 2015

The Journal of Indian Prosthodontic Society, 2008

Water can be used as a saliva replacement, but it is not adequately effective in moistening and l... more Water can be used as a saliva replacement, but it is not adequately effective in moistening and lubricating the oral mucosa. Good wetting of the denture base material by the saliva substitute is critical for optimum retention of the upper complete dentures. PURPOSE: The purpose of the study was to compare wettability of distilled water and four saliva substitutes on DPI heat cure acrylic resin. MATERIALS AND METHODS: A total of 200 heat-cured acrylic samples were prepared of dimensions 2.5 × 1.5 × 2 mm. They were divided into fi ve groups (40 samples in each group), and advancing and receding contact angles were measured using contact angle goniometer. RESULTS: The obtained values for advancing and receding contact angle and the resultant value of angle of hysteresis were subjected to statistical analysis. ANOVA was performed, which showed statistically signifi cant values. CONCLUSION: The wettability of saliva substitute aqwet was found to be better as compared to other saliva substitutes and distilled water on heat-cured acrylic resin used in the study.

The Journal of Indian Prosthodontic Society, 2012

Emphasis on facial esthetics has become an integral part of dental treatment. Prosthetic rehabili... more Emphasis on facial esthetics has become an integral part of dental treatment. Prosthetic rehabilitation of a completely edentulous patient no longer confines to only replacement of missing teeth. Patients are increasingly demanding improvement in esthetics at the end of treatment. Slumped or hollow cheeks can add years to a person's age. This article has described a simple, effective and noninvasive treatment alternative to improve facial appearance in a completely edentulous patient with hollow cheeks by making use of detachable plumper prosthesis using customised attachments. keywords Hollow cheeks Á Cheek plumper Á Customised attachments Á Detachable attachments Á Complete denture Á Separators

The Journal of Indian Prosthodontic Society, 2013

There is much discussion in the dental literature regarding the superiority of one impression tec... more There is much discussion in the dental literature regarding the superiority of one impression technique over the other using addition silicone impression material. However, there is inadequate information available on the accuracy of different impression techniques using polyether. The purpose of this study was to assess the linear dimensional accuracy of four impression techniques using polyether on a laboratory model that simulates clinical practice. The impression material used was Impregum Soft TM , 3 M ESPE and the four impression techniques used were (1) Monophase impression technique using medium body impression material. (2) One step double mix impression technique using heavy body and light body impression materials simultaneously. (3) Two step double mix impression technique using a cellophane spacer (heavy body material used as a preliminary impression to create a wash space with a cellophane spacer, followed by the use of light body material). (4) Matrix impression using a matrix of polyether occlusal registration material. The matrix is loaded with heavy body material followed by a pickup impression in medium body material. For each technique, thirty impressions were made of a stainless steel master model that contained three complete crown abutment preparations, which were used as the positive control. Accuracy was assessed by measuring eight dimensions (mesiodistal, faciolingual and inter-abutment) on stone dies poured from impressions of the master model. A two-tailed t test was carried out to test the significance in difference of the distances between the master model and the stone models. One way analysis of variance (ANOVA) was used for multiple group comparison followed by the Bonferroni's test for pair wise comparison. The accuracy was tested at a = 0.05. In general, polyether impression material produced stone dies that were smaller except for the dies produced from the one step double mix impression technique. The ANOVA revealed a highly significant difference for each dimension measured (except for the interabutment distance between the first and the second die) between any two groups of stone models obtained from the four impression techniques. Pair wise comparison for each measurement did not reveal any significant difference (except for the faciolingual distance of the third die) between the casts produced using the two step double mix impression technique and the matrix impression system. The two step double mix impression technique produced stone dies that showed the least dimensional variation. During fabrication of a cast restoration, laboratory procedures should not only compensate for the cement thickness, but also for the increase or decrease in die dimensions.

The Journal of Indian Prosthodontic Society, 2007

ABSTRACT

The Journal of Indian Prosthodontic Society, 2013

Loss of an eye can cause a significant psychological and emotional disturbance to any patient. An... more Loss of an eye can cause a significant psychological and emotional disturbance to any patient. An ocular prosthesis helps to re-establish the physical and mental well-being of the patient. This article describes a novel technique along with a case report for fabricating a predictable, esthetic and well-fitting custom-made ocular prosthesis in an attempt to avoid costly and time consuming procedures that may be required in other methods.

International Journal of Prosthodontics and Restorative Dentistry, 2013

Indian Journal of Dental Research, 2012

Chlorhexidine is commonly used in dentistry in various forms. Allergic reactions to chlorhexidine... more Chlorhexidine is commonly used in dentistry in various forms. Allergic reactions to chlorhexidine of both immediate and delayed type have been reported. Although the incidence is low there may be severe manifestations in some patients. This report presents a case of allergy to chlorhexidine following topical application.

Indian Journal of Dental Research, 2012

Background: Traditionally, inlay casting waxes have been used to fabricate patterns for castings.... more Background: Traditionally, inlay casting waxes have been used to fabricate patterns for castings. Newer resin pattern materials offer greater rigidity and strength, allowing easier laboratory and intraoral adjustment without the fear of pattern damage. They also claim to possess a greater dimensional stability when compared to inlay wax. Aims: This study attempted to determine and compare the marginal accuracy of patterns fabricated from an inlay casting wax, an autopolymerized pattern resin and a light polymerized pattern resin on storage off the die for varying time intervals. Materials and Methods: Ten patterns each were fabricated from an inlay casting wax (GC Corp., Tokyo, Japan), an autopolymerized resin pattern material (Pattern resin, GC Corp, Tokyo, Japan) and a light-cured resin pattern material (Palavit GLC, Hereaus Kulzer GmbH, Germany). The completed patterns were stored off the die at room temperature. Marginal gaps were evaluated by reseating the patterns on their respective dies and observing it under a stereomicroscope at 1, 12, and 24 h intervals after pattern fabrication. Results: The results revealed that the inlay wax showed a significantly greater marginal discrepancy at the 12 and 24 h intervals. The autopolymerized resin showed an initial (at 1 h) marginal discrepancy slightly greater than inlay wax, but showed a significantly less marginal gap (as compared to inlay wax) at the other two time intervals. The light-cured resin proved to be significantly more dimensionally stable, and showed minimal change during the storage period. Conclusion: The resin pattern materials studied, undergo a significantly less dimensional change than the inlay waxes on prolonged storage. They would possibly be a better alternative to inlay wax in situations requiring high precision or when delayed investment (more than 1 h) of patterns can be expected.