Geriatric dentistry: is rethinking still required? A community-based survey in Indian population.

BACKGROUND: India has a large geriatric population (60 years and above) of 77 million; comprising 7.7% of its total population. Poor oral health and loss of teeth not only adversely affect the dietary intake and nutritional status and thereby compromise general health, but can also deny them the pleasure of eating food of their choice. OBJECTIVE: To assess the level of edentulousness, denture wearing and denture needs of the elderly in the community and to study the correlation between oral health parameters and sociodemographic variables which would help us to define better treatment modalities, counselling and thus improve the oral health of our geriatric patients. MATERIALS AND METHODS: Subjects who were 60 years and above were considered for this study and were randomly selected. Of the 1360 elderly who were enrolled in the study, 780 (57.35%) were males and 580 (42.64%) were female. This sample size is in proportion to the total population for the pilot study. They were given an oral examination and a questionnaire. RESULTS: Fifty seven percent (57%) of the elderly were not satisfied with their oral health status and function. CONCLUSION: Complete edentulousness of both the arches was highest in the middle socio-economic group, and was the lowest in the low socio-economic group. Less than 50% of edentulous elderly and only 10% of partially edentulous elderly were wearing dentures.

Assessment of Static and Dynamic Load Tolerance of the Implant Mounts on its Particular Implant.

Objectives: We compared the loads at which the implant holders from Astra Tech (AST) (AstraOsseoSpeed) and Osseotite Certain failed under static compression after experiencing fatigue, as well as the gap that resulted from dynamic loading between the implant-holder complexes. Materials and Method: The ISO 14801 recommendation served as the foundation for the test protocol. Each brand's five implant-implant holder assemblies underwent dynamic loading. A load of 200 N was applied at a stress frequency of 12 Hz and a cycle rate of 5105. (Eden Prairie, MN, USA). Using scanning electron microscopy (S3700N, HITACHI, Japan), the gap (m) at the interface was measured post-fatigue. Static loading was then used to determine the highest load (N) after the point of failure. Controls included definitive abutment-implant complexes. Statistics were used to analyze the data. Result: The Osseotite Certain group showed a slight trend toward greater resistance, but there was no diversity among the two implant holder groups (P 0.05). AST (AstraOsseoSpeed) implants had a larger interface gap, but the difference was not statistically significant. Conclusion: With respect to greatest compression load or the interface gap following dynamic loading, there were no discernible differences between the two experimental groups.

Stress dissipation in the bone through various crown materials of dental implant restoration: a 2-D finite element analysis.

AIM: To investigate stress transmitted by various restorative materials given for a full veneered implant-supported crown through implants in the bone. METHODS: A 2-D finite element model of dental implant with an abutment and full crown was designed. The materials used for stress dissipation were zirconia, full ceramic, full metal crown, composite crown, and acrylic crown. Adequate boundary conditions were applied, as was a vertical load of 100 N. RESULTS: The highest stress value was exhibited for the zirconia prosthesis model, and maximum stress dissipation for the same model was observed around the cervical region of the abutment and abutment-implant junction (24.877 Mpa). CONCLUSION: Within the limitations of this study, it was concluded that an occlusal material with a low modulus of elasticity, such as acrylic resin, dampens the occlusal impact forces, thereby decreasing its effect on the bone-implant interface.