The influence of occlusion on masticatory performance and satisfaction in complete denture wearers

Abstract

Complete dentures should satisfy patients' needs for comfort, function and aesthetics. Thirty edentulous patients were enrolled in this study. Two sets of complete dentures were made for each patient: one with bilaterally balanced occlusion and the other with lingualised occlusion. The patients used each type of denture for 6 months. A single-blind study design was used in which the patients were not aware of the exchange of dentures. In each 3-month period, electromyographic measurements of the anterior temporalis and masseter muscles were performed. At the end of 6 months, patient satisfaction was evaluated. The second measurement of lingualised occlusion showed the greatest muscle activity, while chewing gum in both the anterior temporalis and masseter muscles (174·5 and 208·19 μV, respectively). The greatest maximum voluntary contraction was also found for the second measurement of lingualised occlusion for both the anterior temporalis and masseter muscles (142·91 and 187·55 μV, respectively). The mean chewing time decreased with lingualised occlusion. The percent distribution of the patients' ratings of their complete dentures and patient satisfaction with lingualised occlusion were higher than those for bilaterally balanced occlusion. Complete dentures with lingualised occlusion increased masticatory performance, maximum voluntary contraction and patient satisfaction and decreased chewing time.

Bilateral balanced occlusion compared to other occlusal schemes in complete dentures: A systematic review

“…Altogether, 17 studies were selected for the analysis: 11 RCTs and 6 prospective studies . A total of 492 patients were evaluated, with a mean age of 64.78 years.…”

“…Most of studies were considered crossover design, while 6 other studies were not considered crossover design . In crossover design, the most of studies made a new set of dentures to evaluated occlusion effect . Some studies change the BBO for CG occlusion by the addition of composite resin in the canines, while one study used occlusal splints to provide different occlusal schemes .…”

“…In the non‐RCT studies based on Newcastle‐Ottawa, only one study showed a high risk of bias (below 6 stars) . Two studies scored 6 stars, 2 scored 7 stars and one study scored 9 stars, indicating a low risk of bias. The mostly absence of stars was related to lacking in terms of ascertainment of exposure, comparability of additional factors and adequate follow‐up (Table ).…”

“…Studies reported no significant difference in EMG or masticatory performance between of BBO and CG, and ZD . BBO showed negative effect compared to LO and CG . However, one study did report that BBO yielded a lower weight of peanuts than LO using the sieving method (Table ).…”

Effect of Gum-Chewing on Facial Appearance and Stomatognathic System

“…This unilateral chewing habit is regarded to be an important reason for the high occlusal force on right posterior teeth in the results of the experiment. Deniz and Kulak Ozkan 11) announced that chewing gum activated the function of the masseter and anterior temporal muscles, and Hosman and Naeije 12) said that electromyogram activity was proportional to 80% of muscle strength in their experiment's electromyogram test in maximum mastication. The increase of in occlusal force in this experiment can be interpreted as an increase in masticatory muscle strength.…”