Influence of mastication and its relationship with Body Mass Index before and after prosthetic rehabilitation in partially edentulous patients

BACKGROUND: The main purpose of prosthetic rehabilitation is to enhance the masticatory function by replacing the missing teeth with an artificial substitute, which improves nutrient-rich food intake. There are recent studies which indicate the influence of chewing behavior and energy intake, but little is known about the relationship between chewing on nutritional status. OBJECTIVE: This study intended to assess the changes in masticatory efficiency before and after prosthetic rehabilitation and its influence on nutritional status and body weight. METHODS: A total of 40 partially edentulous subjects aged between 45- 65 years were recruited. Body Mass Index was determined by measuring body weight using a medical grade weighing scale. Height was measured using wall mounted stature meter and Waist circumference was measured with an anthropometric measure tape. Masticatory efficiency was determined using the sieve method with peanuts as test food at baseline, at 3 and 6 months of prosthetic rehabilitation with a removable partial denture. RESULTS: Sieve test performed for evaluating masticatory efficiency showed an increase in the percentage of smaller particles by 28.3% in non-obese and 32.15% in the obese group. The obese/overweight group showed a decrease in BMI values and non-obese subjects showed no significant change in BMI. CONCLUSION: The study concluded that improving masticatory efficiency by prosthodontic rehabilitation can aid in normalizing the nutritional status in certain partially edentulous non-obese and obese individuals

Marginal and internal fit evaluation of conventional metal-ceramic versus zirconia CAD/CAM crowns

The purpose of this in vivo study was to compare the marginal and internal gap widths of monolithic zirconia crowns fabricated by CAD/CAM technique and metal-ceramic crowns fabricated by conventional technique. 10 participants needing a single restoration were selected. Zirconia crowns using CAD/CAM technology (Group A) (n=10) and metal-ceramic crowns (Group B) (n=10) using lost wax casting technique were fabricated for each selected tooth. The marginal and internal gaps of crowns were recorded using a replica technique with light body silicone material stabilized with a regular set putty. Each replica was sectioned buccolingually and mesiodistally and then evaluated at five pre-determined sites. The points measured were PM for marginal gap, PA for axial gap, PAO for axio-occlusal transition gap and PO and PCO for occlusal gaps using a stereomicroscope at 30× magni?cation. The Paired Sample (t) test was used to detect significant differences between the two groups in terms of marginal and internal fit (?= 0.05). The mean for the marginal gap was 77.42?m (±39.5?m) for Group A compared with 95.86?m (±55.12?m) for Group B. Mean values for internal gap was 87.24 (±21.7 µm) for Group A and 132.91 µm (± 50.63 µm) for Group B. Significant differences were observed between both the groups for marginal (p=.010) and internal (p=.000) fit. The CAD/CAM fabricated zirconia crowns demonstrated a better accuracy of fit when compared to metal-ceramic crowns fabricated by conventional technology

Effect of silver nanoparticles incorporation on impact strength of Heat-cure denture base resins

Background: Poly (Methyl methacrylic acid) based materials are widely used for the fabrication of removable complete and partial denture prostheses. these materials are prone to fractures when subjected to impact forces. While recent studies have explored the antimicrobial potential of denture base materials incorporating silver nanoparticles, their impact on the mechanical properties crucial for the prosthesis\u27s durability has not been adequately established. Aim: To evaluate the impact strength of the heat-cure denture base materials incorporated with various concentrations of silver nanoparticles.  Materials and Methods: Silver nanoparticles were incorporated at various concentrations (0.5, 1.0, 2.0 and 5.0 wt%) into three different heat-cure denture base materials. A total of 150 rectangular-shaped specimens (50 x 6 x 4), which comprises 50 samples from each of the three heat-cure acrylic resins were made using the compression molding technique. Ten specimens (n=10) were allocated for each concentration such as control, 0.5wt%, 1.0wt%, 2.0wt% and 5.0wt% concentrations of silver nanoparticles. A “V” notch was made exactly at the centre of each specimen to prevent the ductile fracture. The impact strength was evaluated using the Izod impact tester. The data were subjected to One-way ANOVA and Post hoc tests for statistical analyses. Results: A decrease in the impact strength was observed in the modified groups compared to the control groups. One-way ANOVA showed significant differences (p=0.000) among the different concentrations of all three denture base materials. Conclusion: Silver nanoparticles incorporation reduced the impact strength of the denture base materials

Knowledge, Awareness, Attitude and Behaviour about Prosthodontic Treatment for Missing Teeth among Indian Population: A Cross Sectional Study

Purpose: The purpose of this study was to evaluate the level of awareness, knowledge, attitude and behaviour of the population aged 16-84 years toward the presence of missing teeth and prosthodontics treatment options available for replacing those missing teeth. Study Selection: A pre-structured multiple-choice questionnaire consisting of socio-demographic questions was given to 300 patients randomly after obtaining their informed consent. The questions included in the survey helped to assess the patient's level of knowledge and awareness of the prosthodontic treatment as a whole. Results: All the age group population were aware of missing teeth in their mouth and are aware of the replacement of those missing teeth. Among subjects, with a degree qualification, 18% choice of removable, 38.5% choice was fixed partial denture, and the other 38.5 % choice was implant option. For 61.6% of the elder group, 47.6% of the middle age group, and 32.7% of the younger adults, friends and relatives were the sources of information. Conclusion: This study found that patients' understanding, and awareness of prosthodontic treatment had improved. Removable dentures were the treatment option of choice for the geriatric age group when considering prosthodontic treatment alternatives. Higher-educated individuals opted for fixed dentures and implants as treatment choices

Knowledge, Awareness, Attitude and Behaviour about Prosthodontic Treatment for Missing Teeth among Indian Population: A Cross Sectional Study

International audiencePurpose: The purpose of this study was to evaluate the level of awareness, knowledge, attitude and behaviour of the population aged 16-84 years toward the presence of missing teeth and prosthodontics treatment options available for replacing those missing teeth. Study Selection: A pre-structured multiple-choice questionnaire consisting of socio-demographic questions was given to 300 patients randomly after obtaining their informed consent. The questions included in the survey helped to assess the patient's level of knowledge and awareness of the prosthodontic treatment as a whole. Results: All the age group population were aware of missing teeth in their mouth and are aware of the replacement of those missing teeth. Among subjects, with a degree qualification, 18% choice of removable, 38.5% choice was fixed partial denture, and the other 38.5 % choice was implant option. For 61.6% of the elder group, 47.6% of the middle age group, and 32.7% of the younger adults, friends and relatives were the sources of information. Conclusion: This study found that patients' understanding, and awareness of prosthodontic treatment had improved. Removable dentures were the treatment option of choice for the geriatric age group when considering prosthodontic treatment alternatives. Higher-educated individuals opted for fixed dentures and implants as treatment choices

Interrelated Association between Edentulism, Cognitive Decline and Prosthodontic Rehabilitation: A Review

Aim and Objective: To establish a relationship between tooth loss and cognitive decline as well as the influence of removable dental prosthesis on cognitive health. Materials and Methods: Initial electronic search was carried out using the following electronic databases: Scopus, PubMed/Medline and Cochrane Database of case controls, systematic and literature re views using the following keywords: “Alzheimer’s Disease”, “Cognitive decline” “Dental prostheses or “Dementia” and “tooth loss” or “edentulism”. Results: A total of 13 studies were selected according to the selection criteria. Out of 13 studies, 8 studies were included, and 5 studies were excluded from the review. Discussion: Sensory information from the oral cavity is sent to the brain via the trigeminal nerve. Effective chewing increases oxygen levels in key brain areas and hence impaired chewing can lead to cognitive decline. Furthermore, people with more missing teeth were at a higher risk of developing Alzheimer's disease or dementia and those with normal cognitive function had significantly more teeth than those who were cognitively impaired, indicating a link between edentulism and risk of cognitive decline. Prosthodontic rehabilitation through dentures results in significant arousal of the dorsal prefrontal cortex and enhances patients' quality of life by improving their masticatory activity and comfort, thus potentially helping prevent cognitive decline leading to dementia. Conclusion: From this literature review we can gather that edentulism may be used as a marker for cognitive decline and that prosthetic rehabilitation may aid in the preservation of cognitive health. Clinical Significance: Prosthodontic rehabilitation in order to bring about effective mastication and chewing efficiency is imperative in prevention of decline in cognitive function

Calcium Hydroxide Pulp Capping Agent: An Overview on Composition, Properties, and Clinical Applications

Calcium hydroxide is a commonly used material in pulp capping procedures due to its favourable biological properties, including the ability to promote dentin bridge formation and stimulate reparative dentinogenesis. The mechanical properties of calcium hydroxide, including its compressive strength, flexural strength, and wear resistance, are relatively low, but they are not critical properties in pulp capping procedures. However, the composition and formulation of calcium hydroxide can vary depending on the manufacturer, and this can affect the material's physical and chemical properties, as well as its handling characteristics. Despite these variations, calcium hydroxide remains a popular choice for pulp capping due to its favourable biological properties and its long-standing history of use in dental procedures