Papers by Dr. Joyce Thomas
‘From Theory and Practice’ of Retention and Resistance form of Tooth Preparations for All Ceramic Restorations: A Digital Imaging Study
Book Publisher International (a part of SCIENCEDOMAIN International), Feb 4, 2022
Introduction Forensic odontology may have been born at the Battle of Nancy in 1477, when the body... more Introduction Forensic odontology may have been born at the Battle of Nancy in 1477, when the body of Charles the Bold was identified by the absence of a lower tooth, 1 or in 1835, when a gold denture helped identify the burned body of the Countess of Salisbury.
International Journal of Oral Care & Research, 2017
Introduction: Dry socket remains among the most commonly encountered complications following extr... more Introduction: Dry socket remains among the most commonly encountered complications following extraction of teeth. It occurs during the healing phase of extraction sockets, and some investigators regard it as the commonest postextraction complication. Aim: The aim of the present study was to evaluate the effectiveness of two different methods used for dry socket management.
The Journal of Contemporary Dental Practice, 2017
Aim The study aimed to assess the impact of mouthwashes on antibacterial activity of individuals ... more Aim The study aimed to assess the impact of mouthwashes on antibacterial activity of individuals with fixed orthodontic appliances. Materials and methods A total of 60 individuals were considered in the study. Sixty (20 each group) nonextraction class I individuals were randomly divided into experimental and control groups. Group I: Experimental group [chlorhexidine (CHX) mouthwash], group II: Experimental group (neem mouthwash), group III: Control group (distilled water). All the clinical examinations were done at baseline and 30th day respectively, after the start of orthodontic treatment. The mean differences between the different experimental groups were calculated using one-way analysis of variance (ANOVA) test. Results There was no statistical significance at baseline mean plaque index (PI), gingival index (GI) scores, and Streptococcus mutans (SM) colony count between groups. The PI and GI scores among CHX and neem mouthwash groups (p = 0.002, p = 0.032 respectively) were sig...
The Journal of Contemporary Dental Practice, 2018
Aim This in vitro study evaluated the resistance form of die preparations for all ceramic restora... more Aim This in vitro study evaluated the resistance form of die preparations for all ceramic restorations and, thereby, explored the concept of effective taper and its correlation between the ideal in theory and actual in the clinical situation by analyzing the digital images of the die preparations. Materials and methods Scanned digital images of 114 die preparations for all ceramic restorations (n = 114) were collected from a dental laboratory. All the images were also analyzed digitally using Adobe Photoshop® software to analyze the degree of taper (angle of convergence) of each preparation and then applied the Zuckerman's circle, and the Lewis perpendicular methods were used to measure the resistance form. Results For the current study, the overall average degree of taper was found to be 20.9° (range, 2—80°), which is more than what is recommended by most previous studies and also sharply greater than the textbook ideal of 3 to 6°. Mean degree of taper for maxillary was 17.56° ...
Assessment of implant stability in immediate implant placement using different bone grafting materials: A clinical study
Journal of Pharmacy And Bioallied Sciences
Aim: The aim of the present study was to assess the implant stability in immediate implant placem... more Aim: The aim of the present study was to assess the implant stability in immediate implant placement using different bone grafting materials. Materials and Methods: Twelve patients (5 males, 7 females, range of 40–58 years) were included in the study. All patients were divided into two groups based on the graft material used. For Group 1, Xenograft bone grafting material was used, and for Group 2, Freeze-dried bone allograft was used. The patients were suggested to rinse with 0.2% chlorhexidine mouth wash for 1 min. Periotome was used for atraumatic tooth extraction, and necessary care was taken to avoid fracture of socket wall. The implant was placed with respective bone grafting materials. An Orthopantomogram (OPG) radiograph is taken at the day of the operation to serve as baseline data for the marginal bone level. Clinical and radiological parameters were evaluated at baseline, 3 months, 6 months, and 12 months to assess the mean marginal bone level changes. Periotest was used for the measurement of implant stability. Results: The mean marginal bone level in Group 1 at baseline (13.58 ± 1.09), 3 months (12.64 ± 0.88), 6 months (12.02 ± 1.42), and 12 months (11.20 ± 1.26), respectively. In Group 2, the marginal bone level was at baseline (14.22 ± 0.26), 3 months (13.52 ± 1.28), 6 months (13.10 ± 0.32), and 12 months (12.12 ± 1.26), respectively. There was a statistically significant difference found in both the groups. Moreover, there was no statistically significant differences found between the groups at all the duration on intergroup comparison of the mean marginal bone level. The mean difference of implant stability in Group 1 the implant stability was 188.6 ± 22.5 and in Group 2 was 191.5 ± 18.2, and there was no statistically significant difference found between the groups. Conclusion: Both bone grafting materials used in the study showed improvement in implant stability and marginal bone levels after immediate placement of implant.
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Papers by Dr. Joyce Thomas