Abstract: Objective The objective of this pilot study was to examine the impact of occlusal splint treatment on mandibular border movements and the condyle position in subjects with bruxism. Materials and methods The study included 9 subjects diagnosed with bruxism (mean age 28.7) and 9 subjects in the control group (mean age 30.5). All subjects were adults, eugnathic, and with a dentoalveolar Angle Class I, without prosthetic restorations, previous or current orthodontic treatments, a systemic disease or previous surgical interventions in the temporomandibular joint. All experimental and control group subjects were provided with a standardized relaxation occlusal splint, which they wore for 8 weeks. During this time, an initial and three additional measurements of incisal opening (IO), left condyle opening (OLC), right condyle opening (ORC), left laterotrusion (LLI) and right laterotrusion (LRI) (after 2, 4 and 8 weeks) were performed using an Arcus Digamma II (Kavo) ultrasound device for mandibular movements recording. Using the same instrument, the condylar position during protrusion, left and right laterotrusion, and in the centric relation position (CR) was analyzed initially and after 8 weeks using the maximum intercuspation as reference point. Continuous variables were described using basic statistical parameters, and the statistical significance of differences between the variables was checked by the t-test and χ2 test (p <0.05). Results The values of IO, OLC, ORC, LLI and LRI ​​increased after 8 weeks of wearing, with the highest increase for OLC, by 13.8%. No statistically significant difference (p <0.05) was found for any changes in movements. Changes in the condyle position during all movements and those in the CR were higher in the experimental group for 10 out of 14 measured parameters compared to the control group. A statistically significant difference was established for 5 out of 14 measured parameters after the occlusal splint treatment. Conclusions The results of this pilot study have proven the influence of the occlusal splint treatment on mandibular border movements in subjects with bruxism by increasing the range of movements. Also the changes of the condyle position in subjects with bruxism were greater compared to those in healthy subjects.

Abstract: The occlusal splint is one of the methods of treatment of discrepancies between the centric relation and maximal intercuspation (CR/MI), and other temporomandibular joint (TMJ) disorders. It is also a method of reducing the effects of bruxism. Designing an occlusal splint for a given relation between the maxilla and the mandible involves: creating partial surfaces, integrating them, and producing the splint on a 3D printer. The paper presents and compares some techniques used to design splint surfaces under a required therapeutic maxilla-mandible relation.

Abstract: Human mandible can be related to maxilla at several positions in the horizontal plane. Among these, centric relation is a significant position because of its usefulness in clinical prosthodontics. Registration of centric relation is usually done by check bite record.

Abstract: Background : Esthetically and functionally successful full mouth rehabilitation requires careful attention and me-ticulous treatment planning. Successful restoration in a patient with anterior crossbite and a partially edentulous situation can be challenging especially when bilateral posterior segment teeth is missing. Combination restora-tion using attachment retained removable partial denture (RPD) and removable partial overdenture (RPO) is such kind of treatment modality in prosthodontics. Purpose : This study was to provide an overview of a case about full mouth rehabilitation in anterior crossbite and posterior bite collapse patient. Case : A 64-year-old female pa-tient came to Prosthodontic Department of RSGMP Universitas Airlangga to have dentures replacing her missing teeth with aesthetic issue on her anterior teeth in order to eat well and be more confident. The patient wants to change her smile into new smile with acceptable aesthetic and function. Management : Diagnostic wax-up was made to capture the right occlusal vertical dimension (OVD) in centric relation (CR) that will be used in the first stage of full mouth rehabilitation, followed by management of the remaining teeth by endodontic and periodontal intervention by crown lengthening. Then, definitive restorations were made by maxillary attachment retained RPD with splint four anterior crowns and mandibular RPO with two single crowns on the lower teeth to correct anterior crossbite and posterior bite collapse. Conclusion : Patient had a satisfactoryly aesthetic and functional results with new occlusion using maxillary attachment retained RPD and mandibular RPO.

Abstract: Complete denture occlusion, when put into a wider concept, is the mechanism involving closure of the maxillary and mandibular teeth in centric relation. It occurs throughout the range of functional and non-functional movements of the mandible. Occlusion is considered to be developed to function efficiently causing the least amount of trauma to the supporting tissues. This article aims at providing a review to the concepts of occlusion involved in complete denture Prosthodontics.

Abstract: Introduction Bilateral balanced occlusion is achieved when there is equilibrium on both sides of the prosthesis, due to the simultaneous contact of the artificial teeth in centric and eccentric occlusion. One of the areas in which research is lacking is the relation between sagittal condylar path (CP) and horizontal incisal path (IP) with optimal balanced occlusion. Materials and Methods Semiadjustable Articulator Artex Arcon AP with Rotofix facebow, 40 µ Bosch articulating paper of red and blue color, protractor, centric and protrusive interocclusal plaster records were used for the study on 50 completely edentulous subjects. Teeth arrangement was done with optimal balanced occlusion, and the numbers of contacts were recorded in centric relation and eccentric positions. Statistical analysis was done by using student’s t test and Karl Pearson coefficient correlation. Results The average sagittal CP was 30.38° in the age group of 40 to 55 years and 32.58° in the age group of 56 to 70 years, and the average horizontal IP was 15.79° in the age group of 40 to 55 years and 16.04° in the age group of 56 to 70 years.Statistically significant results were found between sagittal CP, horizontal IP with bilateral balanced occlusion in the age group of 40–55 years. Conclusion Statistically significant relations were found in balanced occlusion between waxed up denture on articulator, processed denture on articulator and processed denture on articulator after selective grinding. Balanced occlusion is more predictable in a younger group of individuals.

Abstract: Introduction: When degree of facial asymmetry is noticeable, it negatively affects facial and smile esthetics. It may due to discrepancies in size and position between cranial base and maxilla/ mandible. Asymmetry due to occlusal interference may result in functional shift of the mandible which usually poses a challenge. So diagnosis and functional examination are keys to an esthetic and stable outcome. Objectives: This case report addresses the facial asymmetry in an adult patient who sought for improvement infacial appearance and occlusion. Case Description: A 26-year old male patient reported with chief complaint of noticeable facial asymmetry and irregularly positioned teeth. Clinical examination revealed mild facial asymmetry. Intraorally patient showed crowding, non-coincident dental midlines, anterior cross bite, missing 23 and root stump 46. Starting point in diagnosis and treatment of this case was establishing centric relation through guiding the mandible into centric relation rather than centric occlusion. During functional examination we observed discrepancyin CR-CO which was confirmed using PA-Ceph in centric rest position. Treatment was planned as deprogramming splint followed by fixed mechanotherapy. Post muscle deprogramming we were able to achieve “true” anatomic relationship of the mandible to the maxilla. Conclusion: Thus, the present case report aims at addressing important aspect of functional examination to be considered by the orthodontist while reaching an accurate diagnosis and treatment plan in such patient’s with challenging asymmetry. Keywords: Centric relation, Asymmetry, Deprogramming.

Abstract: Background: For the rehabilitation of edentulous patients, the centric relation (CR), which is regarded as a repeatable and useable reference position, is the best maxillomandibular position.Objective: We sought to evaluate the reproducibility of interocclusal wax and extra oral Gothic arch techniques for centric relation (CR) recording, as well as subjective evaluation of dentures made in this way for edentulous people.Methods: In 18 patients with total denudation, centric relation and horizontal condylar guidance were detected utilising interocclusal wax and Gothic arch tracing.The articulator received these records, and the difference between the two values was noted.Following that, patients were split into two groups based on how the horizontal condylar guidance recording method and centric relation were used to create balanced occlusion."Woelfel subjective evaluation criteria" were used to evaluate the dentures' response subjectively.Each technique's ability to be repeated was evaluated.Results: In 22.41% of patients, the CR obtained using the static method (interocclusal wax record) was posterior to the CR obtained using the functional method (Gothic arch tracing), whereas in 70.92% of patients, the CR obtained using the static method was anterior to the CR obtained using the functional method, with the difference in CR varying between 0.5 and 1 mm.The clinical effectiveness of the entire denture is unaffected.According to subjective opinion, none of the measures in either group were statistically significant.By both techniques, the horizontal condylar guiding angle was roughly similar. Conclusion:The dentures made using the two distinct approaches were comparable in terms of correctness of centric relation, retention and stability, condition of basal tissues as well as chewing effectiveness and level of patient satisfaction.

Abstract: The craniofacial skeletal complex has one movable bone, the mandible. The mandibular movements are made possible by the temporomandibular joint and the facial muscles. The mandibular movements are affected by various etiological factors which can be congenital and acquired. During replacement of missing teeth, recording maxillomandibular relation often poses a difficulty. Restoring exact vertical dimension and centric relation contributes to a harmonious occlusion. Various methods of recording mandibular movements are available.

Abstract: Objective: To record the occlusal contacts in centric relation at the first insertion stage of complete denture. Materials and Methods: A cross-sectional study was conducted in Prosthodontics department, Khyber College of Dentistry, Peshawar starting from August 2019 to December 2019 using consecutive non-probability sampling. Data was collected from 30 conventional heat cured processed and finished acrylic resin complete dentures (CDs) first inserted into the mouth by checking occlusion in centric relation (CR). Patients having neuro-muscular problems and temporo-mandibular disorders (TMD’s) were excluded from the study. Data was analyzed using SPSS 20. Results: Out of thirty CD patients, mean age recorded was 61±5 years and males (60 %, n=18) reported more than females (40%, n=12). Most of the participants (83.3%, n=25) didn’t perform a remount procedure. Bilateral occlusal contacts (56.7%, n=17) were recorded more than Unilateral contacts (43.3%, n=13). Majority of CDs had 6-10 number of occlusal contacts in CR after processing (46.7%, n=14). Of those who hadn’t performed a laboratory remount, the number of occlusal contacts in the range of 6-10 were noted to be highest (40%, n=12). Conclusion: Proper processing techniques and a laboratory remount after processing must be performed to ensure a good occlusal practice in CD wearers.