Purpose. To evaluate the surface adaptation and maximal biting force of CAD-CAM milled mandibular overdenture (CAD-CAM MOD) compared to conventional compression mold mandibular overdenture (CC MOD). Materials and Methods. Ten completely edentulous subjects with persistent complaints of their complete mandibular dentures were received four dental implants in the anterior mandible. Three months after osseointegration, subjects were randomly received either conventional compression mold or CAD-CAM MOD in a crossover design. To assess tissue surface adaptation, the fitting surfaces of each denture base were scanned and placed on the reference master cast. Three and six months after each overdenture was inserted, clinical performance in the form of maximum biting force was evaluated. Results. The results of this study indicated that the tissue surface adaptation of the CAD-CAM MOD bases was significantly better than the conventional (compression mold technique) processed bases where ( P = 0.0001 ). Regarding clinical performance (maximum biting force), the CAD-CAM MOD exhibited better clinical performance ( P = 0.0001 ). Conclusions. In denture processing methods, the CAD-CAM overdenture delivered more precise adaption and clinical performance than the compression mold technique.

Background: Stabilisation splint therapy (SST) and low-level laser therapy (LLLT) are effective-invasive treatment for temporo-mandibular disorder (TMD) patients.However, the specific efficacy of each therapy in patients with chronic closed lock (CCL) from temporo-mandibular joints (TMJ) disc displacement without reduction (DDwoR) remains unknown. Objectives:The aim of this study was to assess and compare the efficacy of SST and LLLT alone or in combination in patients with CCL from TMJ DDwoR.Methods: This parallel randomised clinical trial included 42 patients who were diagnosed with CCL from TMJ DDwoR. Patients were allocated equally and randomly into three treatment groups: group I received combined SST and LLLT, group II received LLLT and group III received SST. Maximum mouth opening (MMO), visual analogue scale (VAS), muscle and joint palpation scores and time required to achieve normal state were evaluated at baseline, 1, 2, 4 weeks, 3 and 6 months after the intervention.Data were collected and analysed using SPSS software.Results: Regarding MMO and VAS, a statistically significant improvement was found between group I versus group II and versus group III at all evaluation times. Regarding muscle and joint palpation scores, a statistically significant difference was found between group I versus group III, while non-significant difference was found between group I and group II. A statistically significant faster improvement was found in group I versus group III and versus group II. Conclusion:All treatment modalities can be effective in management of CCL from a TMJ DDwoR cases, but the combined SST and LLLT group seems to provide the best and quickest improvement.Clinical trial registration number: NCT05548894.

Purpose: Patient satisfaction for the complete denture constructed by using two impression techniques was assessed. A custom dual tray was used as a modification of window impression technique versus the conventional impression technique. Subjects and methods: Ten completely edentulous patients with anterior hypermobile tissues were included in this study, using a non-randomized cross-over study design. The aim of the study was to evaluate patient satisfaction with two maxillary complete dentures constructed for each patient, one using the windows impression approach with a custom-made dual tray and the other using the conventional impression technique with a custom single tray. The time interval for using each set was about 3 and 6 months. Patients' satisfactions were assessed at every time interval. Data was analyzed to determine the patient satisfaction with the different complete dentures using the SPSS.ver.23 and Wilcoxon signed rank test at (α = 0.05). Results: Patients' satisfaction survey showed that the 2 different maxillary dentures were not statistically equivalent, where the maxillary complete denture constructed with windows technique using the dual custom tray demonstrated greater patient satisfaction. Conclusion: Within this study, complete denture constructed with windows technique using the dual custom tray improves the denture function and subsequently the patient satisfaction.

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Background New materials for overdenture base construction were evolved. Thus, more clinical trials are needed to validate these materials. Objective This study aimed to compare the difference between CAD/CAM‐milled poly methyl methacrylate (PMMA), poly ether ether ketone (PEEK) and conventional mandibular implant‐assisted overdentures regarding patient satisfaction and oral health‐related quality of life (OHRQL). Methods This randomised, crossover, clinical study included 18 completely edentulous subjects rehabilitated with three mandibular implant‐assisted overdentures with three different denture base materials opposing a maxillary single denture. These materials were as follows: CAD/CAM‐milled PMMA, CAD/CAM‐milled PEEK and conventional PMMA. Every participant first received each mandibular overdenture in a random manner. After 6 months of each overdenture use, patient satisfaction and oral health‐related quality of life were assessed using visual analogue scale (VAS) and Oral Health Impact Profile (OHIP‐EDENT‐19), respectively, and then crossover to other groups was done. The same was repeated to the last group. Comparison of VAS and OHIP‐EDENT‐19 between groups was done using Kruskal–Wallis test followed by Bonferroni test. Results Regarding all the VAS items, there were statistically significant higher scores for CAD/CAM‐milled PMMA and PEEK than conventional PMMA base except for speech, aesthetic and smell. Regarding OHIP‐EDENT‐19, many items revealed statistically lower problem scores for CAD/CAM‐milled PMMA, and CAD/CAM‐milled PEEK than conventional PMMA base except psychological discomfort, psychological disability and social disability. Conclusion Within the limit of this study, CAD/CAM‐milled PMMA and CAD/CAM‐milled PEEK were recommended as implant‐assisted overdenture bases as it revealed higher patient satisfaction and better oral health‐related quality of life in comparison with conventional PMMA implant‐assisted overdenture.