Denture characteristics, oral hygiene practice and periodontal changes of partial denture wearers and non-denture wearers in a Teaching Hospital- A comparative study

Background: There can be localized periodontal inflammation around abutment teeth of dentures as a result of plaque accumulation. This study assessed the periodontal changes of removable partial denture wearers compared to that of non-denture wearers. Methodology: Participants were recruited from the prosthodontic and restorative outpatient clinics of Lagos University Teaching Hospital. The self-administered questionnaire was used to collect information on socio-demographics, denture characteristics, periodontal changes and oral hygiene practice of participants. Periodontal status assessed included gingival inflammation, plaque accumulation and tooth mobility. Data was analyzed using SPSS version 20 (IBM SPSS Armonk, New York) and presented as frequencies and percentages. Test for significance was done using Chi-square statistics, and the level of statistical significance was set at P < 0.05. Results: A total of 96 participants between age 16 and 74years were recruited with mean age of 40±14.5years. There were 56 females and 40 males (F:M; 1.4:1). Fifty-four denture wearers and forty-two non-denture wearers were recruited into the study. Among participants wearing partial denture, 49(90.7%) had gingival inflammation; 45(91.8%) had mild inflammation compared to 4.8% participants who are non-denture wearers. 29(53.7%) denture wearers had fair oral hygiene while most 31(73.8%) non-denture wearers had excellent oral hygiene. Abutment teeth in denture wearers had tooth recession; mostly on the upper arch and also posteriorly. Conclusion: The periodontal inflammation, tooth recession and mobility in denture wearers were worse compared to non-denture wearers. Thus, they need to be motivated for more adequate oral hygiene practices and have regular recall system to monitor their periodontal health.

Development and validation of a progressive web application to educate partial denture wearers

Effective delivery of post-insertion instructions is essential for denture care and oral health. This study aimed to develop a progressive web application (PWA) to educate patients’ chairside and serve as a reference material. A need analysis was conducted before prototype development. Subsequently, the prototype was subjected to content verification, design appraisal and usability testing. The results of usability testing revealed a user task success rate of 94.4%, with an adjusted Wald 95% confidence interval of 83–100%. User satisfaction assessed using the Single Ease Questionnaire and System Usability Score reported a mean score of 6.13 (95% CI: 5.69–6.55) and 85.9 (95% CI: 82.2–89.6), respectively, indicating good usability. This study highlights the systematic approach of developing an evidence-based educational PWA to meet the usability standards for mobile applications. This PWA is useful in clinical studies to explore mobile technologies’ potential in educating denture wearers, especially in the older population.

Hemisection- A Saviour for Periodontally & Cariously Involved Permanent Mandibular Molar

Progressive carious and inflammatory involvement of teeth if left untreated will ultimately lead the loss of tooth structure in the oral cavity. Earlier clinician was left with no option but extraction of such hopeless teeth followed by replacement with fixed partial denture, removable partial denture or implants. Hemisection is a removal of compromised root and the associated crown portion. It is one of the treatment options for preserving remaining part of molar having sound periodontium. This case report presents a patient in which distal half of the teeth was carious but with sound periodontium and the periodontally compromised mesial root was resected, and after healing, fixed dental prosthesis was delivered to restore proper form and function

Implant placement in the aesthetic zone: More efficiency in guided surgery

The aim of this case report is to describe the combining of a surgical guide with a temporary restoration to streamline the implant process. A 54-year-old male patient presenting partial edentulism underwent computer-aided template-guided implant placement for the replacement of the missing upper second right incisor. The presented technique was used during the surgical procedures; it introduced the integration of a surgical guide into the temporary fixed partial denture. Using computer-aided design, computer-aided manufacturing technology and virtual implant planning, a temporary-implantation fixed partial denture was constructed, and a guidance sleeve was implemented into it. The implant bed preparation was then performed using the bridge as a surgical guide. After osteotomy, the guidance sleeve within the bridge was sealed, and the bridge was temporarily incorporated for submerged healing of the implant. The usage of a temporary restoration as a surgical guide seems to make the digital workflow of guided implant placement more efficient, by achieving a representative clinical outcome.

Fit accuracy of removable partial denture metal frameworks produced by CAD-CAM – a clinical study

Objectives: To assess the effect of a CAD-CAM protocol fabrication on the clinical fit accuracy of removable partial denture metal frameworks to abutment teeth. Methods: Fifteen patients with partial edentulism were selected to participate in this clinical study, and twenty dental arch rehabilitations were planned. For each dental arch (n=20), two cobalt-chromium frameworks were produced through two protocols: CAD-CAM production (experimental group); and conventional lost-wax casting technique (control group). Clinical fit accuracy was assessed using an indirect quantitative method to evaluate the gap between the framework occlusal rest and the corresponding rest seat. A silicone mold of that gap was obtained, digitized, and analyzed by micro-computed tomography. The two silicone molds obtained for each occlusal rest were overlapped and evaluated for thickness and volume. Data were analyzed with the paired t test for silicone thickness results and the Wilcoxon test for silicone volume results (α= 0.05). Results: Considering the two dependent variables under study, no statistically significant (p=0.441 for silicone thickness and p=0.204 for silicone volume) differences were found between groups. Conclusions: The results of this study suggest that the CAD-CAM protocol applied is a viable method for the production of removable partial denture metal frameworks. (Rev Port Estomatol Med Dent Cir Maxilofac. 2021;62

Surgical management of central giant cell granuloma of mandible and prosthetic rehabilitation in a nine year girl: A case report

Central giant cell granuloma (CGCG) is an uncommon, benign, idiopathic, osteolytic lesion of jaws, histologically characterized by multinucleated giant cells distributed in fibrovascular connective tissue stroma. Accurate diagnosis of the lesion is essential for the successful management and the prognosis of this locally destructive lesion. In this paper, a rare case of large destructive CGCG involving anterior region of mandible, causing expansion of labial cortical plate and mobility of teeth in a nine-year girl is presented. It was treated successfully by enucleation and curettage with satisfactory preservation of the continuity of mandible. Nine months post operatively, the child was rehabilitated with a temporary partial denture to improve esthetics, phonetics and function. One year clinical and radiographic follow up showed new bone formation and no evidence of recurrence.

The effect of Implant length and diameter on stress distribution of tooth-implant and implant supported prostheses:An in-vitro finite element study

The aim of this study is to evaluate the effectiveness of the implant diameter and length on force dissemination of tooth-implant and implant retained fixed restorations. A finite analysis model was used via a 3D simulation of a unilateral mandibular Kennedy Class I arch. Through thresholding the resultant assembly, a region of interest was selected from the CT scan. Details of the diameter (D) and length (L) of implant were introduced. Ds used were 3.7, 4.7, and 5.7, while Ls used were 10, 11.5, and 13. The constant was the use of rigid connectors in both designs (implant–implant and implant–tooth fixed partial dentures) and the mesial implant (D 3.7 and L 11.5). Stress in cancellous bone around mesial abutment, which is the second premolar in tooth-implant FPD and mesial implant in the implant-implant fixed partial denture (FPD), revealed that the stress was significantly lower in tooth-implant FPD when compared to implant-implant FPD (21.1±0.00 versus 46.1±0.00, p &lt;0.001). Stress distribution in the bone around any implant depends on several factors such as diameter, length, and tooth-implant vs. implant-implant support. The implant diameter was more significant for improved stress distribution than implant length. A moderate increase in the length of the implant consequently reduced stress.

Postgraduate student’s perception on preclinical prosthodontics curricula: A web-based survey

This study aimed to determine the current background of teaching pre-clinical prosthodontics for post graduate students. It describes the perception of post graduate students regarding the effectiveness of the preclinical prosthodontic curriculum in preparing them to operate efficiently in the clinical setting.: To assess student’s knowledge and perception of preclinical postgraduate prosthodontics course in different dental colleges of India.: The study sample was obtained from 148 postgraduate student, both male and female, an anonymous questionnaire consisting of 15 questions regarding knowledge, attitude and practice of the preclinical curriculum. This research was conducted after getting permission from the respective authority and consent from all respondents. Data acquired from structured questionnaires were analysed and compared by simple percentage method.After careful assessment and graphical representation of responses acquired from participants, results were formulated. Participants expressed through open ended and closed ended questionnaire that exercises conducted for complete denture prostheses and fixed partial denture prostheses were adequate and preclinical curriculum for implantology and maxillofacial prostheses needs to be streamlined.This paper has found that, while all schools make efforts to ensure that their postgraduate dental students are best prepared for subsequent independent practices, prosthodontic education varies among schools. Although some trends in curricular formats and content are evident. This survey indicated that active and passive learning for preclinical prosthodontics and frequent feedback from students plays a vital role.