Shiney Boruah - Academia.edu (original) (raw)

Papers by Shiney Boruah

Research paper thumbnail of Evaluation of Physical Properties of Denture Base Resins Containing Silver Nanoparticles of Aloe barbadensis Miller, Morinda citrifolia, and Boesenbergia rotunda and Its Anti-microbial Effect: An In Vitro Study

Research paper thumbnail of An In Vitro Comparison of Microbial Adhesion on Three Different Denture Base Materials and Its Relation to Surface Roughness

Cureus

Objective: The purpose of this in vitro study is to compare and evaluate the surface roughness an... more Objective: The purpose of this in vitro study is to compare and evaluate the surface roughness and microbial adhesion of Staphylococcus aureus and Candida albicans after the finishing and polishing of three different denture base materials. Materials and Methods: A total of 84 samples of three different denture materials were used. The samples were divided into three groups: Group I (conventional poly methyl methacrylate), Group II (injectionmolded polymethyl methacrylate), and Group III (injection-molded polyamide). Fourteen samples from each group were tested for surface roughness using an optical profilometer. Seven samples from each group were incubated in a suitable culture broth containing Candida albicans and Staphylococcus aureus separately for 48 hours. Microbial colony forming unit (cfu/ml 2) was estimated in order to evaluate the microbial adhesion to the surface of the denture base materials. Confocal laser scanning microscopy was done to visualize the microorganisms. Results: The mean surface roughness of Group I was 0.1176± 0.04 µm, Group II was 0.0669±0.02 µm, Group III was 0.1971±0.02 µm. One-way ANOVA revealed statistically significant differences in the mean surface roughness values among the three groups (p < 0.05). Tukey HSD (honestly significant difference) test confirmed the specific differences within the groups. The results of colony forming unit showed maximum adherence in Group III samples among both the species followed by Group I samples and least in Group II samples. Confocal laser scanning microscopy revealed significant differences in microbial adhesion among both Staphylococcus aureus and Candida albicans in the three groups (p <0.05). One-way multivariate ANOVA was performed to analyze the data obtained from confocal laser scanning microscopy. Microbial adhesion was least observed in Group II samples followed by Group I samples and the highest microbial adhesion was observed in Group III samples. Conclusion: Microbial adhesion was proved to have a direct correlation with the surface roughness of denture base materials. An increase in surface roughness (Ra) increases microbial adhesion.

Research paper thumbnail of Prosthetic rehabilitation of a maxillary defect caused by post covid mucormycosis using a two-part obturator- A case report

Zenodo (CERN European Organization for Nuclear Research), Dec 30, 2022

Mucormycosis is a hostile and life-threatening fungal infection caused by Mucormycetes that prima... more Mucormycosis is a hostile and life-threatening fungal infection caused by Mucormycetes that primarily affects when body defence mechanisms become weaker. Diabetes is a major risk factor followed by cancer immunotherapy, organ transplantation, and steroid therapy. Mucormycosis presents in various clinical forms such as pulmonary, gastrointestinal, cutaneous and rhinocerebral. The most common symptoms of rhinocerebral mucormycosis include headache, sinus congestion, unilateral facial swelling, black lesions on the nasal turbinate that can rapidly extend to the midfacial and orbital region and can lead to palatal and maxillary deformities, fistula, blindness, and other analogous damage. Surgical excision and debridement of the necrotised areas might affect the quality of life of the patient and will result in facial deformity, speech impairment and improper mastication. The prosthetic rehabilitation of such extensive maxillary defects poses a challenge. Lack of bone support, tissue loss resulting in additional weight and volume of the obturator, uncertainty over retention of the prosthesis and difficulty in insertion and removal due to increased vertical height of the prosthesis are factors to be considered. This article presents an innovative technique for fabrication of a two-part obturator for the prosthetic rehabilitation of maxillary defect to make a retentive obturator that can be inserted and removed with ease.

Research paper thumbnail of Customized Gingival Retraction Cord using Additive Manufacturing: A Novel Technique

International Journal of Current Research and Review

Introduction: In Prosthodontics, impressions are required to produce indirect restorations with a... more Introduction: In Prosthodontics, impressions are required to produce indirect restorations with accurate fit. The main objective of impressions for fixed dental prostheses is to displace the gingival tissue and register the finish lines and prepared abutments accurately. To acquire preventive therapeutic, and aesthetic properties, the margins of restoration are accurately positioned in the prepared finish line of the abutment. In tooth-supported and implant-supported fixed prostheses, impression making requires an accurate record of the prepared finish line area, particularly where the finish line is located at the same level as gingiva or sub-gingiva. The Gingival retraction can cause tissue injury, bleeding, apical recession when proper positioning and minimal force application are not followed. Ideally, the retraction technique choice must be simple, quick, and inexpensive and should not cause damage to periodontal tissues. This article is an attempt to present the technique that involves the fabrication of a customized gingival cuff for abutment tooth by 3D printing technology using thermoplastic polyurethane material. Aim: The primary goal of this technique is to reversibly displace the gingival tissues such that an adequate amount of lowviscosity impression material can be introduced into the widened sulcus and records the marginal detail. Result: The customized 3D printed gingival cuff was packed into the gingival sulcus using a cord packer facilitated easy gingival retraction without damaging the surrounding gingival tissue. Conclusion: This technique greatly reduces the marginal discrepancy of the final restoration with minimal trauma to the gingival tissues and achieve a desirable emergence profile of the restoration especially when the finish line is at, or just within, the gingival sulcus.

Research paper thumbnail of Evaluation of Physical Properties of Denture Base Resins Containing Silver Nanoparticles of Aloe barbadensis Miller, Morinda citrifolia, and Boesenbergia rotunda and Its Anti-microbial Effect: An In Vitro Study

Research paper thumbnail of An In Vitro Comparison of Microbial Adhesion on Three Different Denture Base Materials and Its Relation to Surface Roughness

Cureus

Objective: The purpose of this in vitro study is to compare and evaluate the surface roughness an... more Objective: The purpose of this in vitro study is to compare and evaluate the surface roughness and microbial adhesion of Staphylococcus aureus and Candida albicans after the finishing and polishing of three different denture base materials. Materials and Methods: A total of 84 samples of three different denture materials were used. The samples were divided into three groups: Group I (conventional poly methyl methacrylate), Group II (injectionmolded polymethyl methacrylate), and Group III (injection-molded polyamide). Fourteen samples from each group were tested for surface roughness using an optical profilometer. Seven samples from each group were incubated in a suitable culture broth containing Candida albicans and Staphylococcus aureus separately for 48 hours. Microbial colony forming unit (cfu/ml 2) was estimated in order to evaluate the microbial adhesion to the surface of the denture base materials. Confocal laser scanning microscopy was done to visualize the microorganisms. Results: The mean surface roughness of Group I was 0.1176± 0.04 µm, Group II was 0.0669±0.02 µm, Group III was 0.1971±0.02 µm. One-way ANOVA revealed statistically significant differences in the mean surface roughness values among the three groups (p < 0.05). Tukey HSD (honestly significant difference) test confirmed the specific differences within the groups. The results of colony forming unit showed maximum adherence in Group III samples among both the species followed by Group I samples and least in Group II samples. Confocal laser scanning microscopy revealed significant differences in microbial adhesion among both Staphylococcus aureus and Candida albicans in the three groups (p <0.05). One-way multivariate ANOVA was performed to analyze the data obtained from confocal laser scanning microscopy. Microbial adhesion was least observed in Group II samples followed by Group I samples and the highest microbial adhesion was observed in Group III samples. Conclusion: Microbial adhesion was proved to have a direct correlation with the surface roughness of denture base materials. An increase in surface roughness (Ra) increases microbial adhesion.

Research paper thumbnail of Prosthetic rehabilitation of a maxillary defect caused by post covid mucormycosis using a two-part obturator- A case report

Zenodo (CERN European Organization for Nuclear Research), Dec 30, 2022

Mucormycosis is a hostile and life-threatening fungal infection caused by Mucormycetes that prima... more Mucormycosis is a hostile and life-threatening fungal infection caused by Mucormycetes that primarily affects when body defence mechanisms become weaker. Diabetes is a major risk factor followed by cancer immunotherapy, organ transplantation, and steroid therapy. Mucormycosis presents in various clinical forms such as pulmonary, gastrointestinal, cutaneous and rhinocerebral. The most common symptoms of rhinocerebral mucormycosis include headache, sinus congestion, unilateral facial swelling, black lesions on the nasal turbinate that can rapidly extend to the midfacial and orbital region and can lead to palatal and maxillary deformities, fistula, blindness, and other analogous damage. Surgical excision and debridement of the necrotised areas might affect the quality of life of the patient and will result in facial deformity, speech impairment and improper mastication. The prosthetic rehabilitation of such extensive maxillary defects poses a challenge. Lack of bone support, tissue loss resulting in additional weight and volume of the obturator, uncertainty over retention of the prosthesis and difficulty in insertion and removal due to increased vertical height of the prosthesis are factors to be considered. This article presents an innovative technique for fabrication of a two-part obturator for the prosthetic rehabilitation of maxillary defect to make a retentive obturator that can be inserted and removed with ease.

Research paper thumbnail of Customized Gingival Retraction Cord using Additive Manufacturing: A Novel Technique

International Journal of Current Research and Review

Introduction: In Prosthodontics, impressions are required to produce indirect restorations with a... more Introduction: In Prosthodontics, impressions are required to produce indirect restorations with accurate fit. The main objective of impressions for fixed dental prostheses is to displace the gingival tissue and register the finish lines and prepared abutments accurately. To acquire preventive therapeutic, and aesthetic properties, the margins of restoration are accurately positioned in the prepared finish line of the abutment. In tooth-supported and implant-supported fixed prostheses, impression making requires an accurate record of the prepared finish line area, particularly where the finish line is located at the same level as gingiva or sub-gingiva. The Gingival retraction can cause tissue injury, bleeding, apical recession when proper positioning and minimal force application are not followed. Ideally, the retraction technique choice must be simple, quick, and inexpensive and should not cause damage to periodontal tissues. This article is an attempt to present the technique that involves the fabrication of a customized gingival cuff for abutment tooth by 3D printing technology using thermoplastic polyurethane material. Aim: The primary goal of this technique is to reversibly displace the gingival tissues such that an adequate amount of lowviscosity impression material can be introduced into the widened sulcus and records the marginal detail. Result: The customized 3D printed gingival cuff was packed into the gingival sulcus using a cord packer facilitated easy gingival retraction without damaging the surrounding gingival tissue. Conclusion: This technique greatly reduces the marginal discrepancy of the final restoration with minimal trauma to the gingival tissues and achieve a desirable emergence profile of the restoration especially when the finish line is at, or just within, the gingival sulcus.