Kinesiographic study of mandibular movements during functional adaptation to complete dentures

Abstract

After complete denture insertion, edentulous patients usually present transitory difficulties. This is one of the most critical stages of prosthetic treatment and it is strongly related to the prostheses acceptance. The aim of this study was to evaluate potential changes in the mandibular movement pattern related to insertion of the complete denture during the functional adaptation period. The kinesiograph instrument K6-I (Myotronics Research Inc., Seattle, WA) was used to evaluate eight edentulous patients that received conventional complete denture treatment. Recordings of opening and closure movement limits, movement velocity, postural rest position, chewing cycle and limits of eccentric movements were performed. Each patient was evaluated in four different stages: with the old dentures, immediately after insertion of the new dentures, and 30 days and 6 months after insertion of the dentures. The results showed that there were no remarkable changes in the mandibular motion patterns after insertion of the new dentures. It was suggested that the problems related to the process of utilization of new dentures are not strictly associated to the mandibular movement. Therefore, functional adaptation after denture insertion is not directly related to functional changes, but to the quality of the dentures and to individual features.

A cross‐over randomised clinical trial of eccentric occlusion in complete dentures

“…The results obtained reinforce the concept that the temporomandibular joint receptors play an important role in controlling mandibular movements and, even if periodontal proprioception is absent, as in the edentulous patients, masticatory dynamics remain unchanged because chewing is a rhythmic activity modulated by a central neural generator (14, 21, 22). It is possible that the masticatory system may work well regardless of the occlusal scheme chosen.…”

“…The sensor array was positioned according to the manufacturer’s instructions and the magnet was attached to the labial midline surface of the mandibular (Scans 1, 3 and 8) or maxillary complete denture (scan 3 – pattern of maxillary complete denture movement during chewing) (13, 14, 16). To study mandible movement during chewing and the pattern of maxillary complete denture movement during chewing, volunteers deliberately chewed a 5 × 10 × 15 mm of bread.…”

A Randomized Clinical Trial of Oral Health‐Related Quality of Life, Peri‐Implant and Kinesiograph Parameters in Wearers of One‐or Two‐Implant Mandibular Overdentures

“…All CDs were fabricated using the concept of bilateral balanced occlusion . The functional adaptation period was established as 30 days . Denture bases and occlusion were adjusted during this period when necessary, and the experimental procedures began after this period.…”

Validation of the Brazilian versions of two inventories for measuring oral health‐related quality of life of edentulous subjects

“…Although the participants were evaluated before the provision of dentures by the faculties, a few of them presented with unsatisfactory new dentures before assessment. In those cases, a period of one month or longer wearing the same pair dentures was considered necessary for adaptation 37,38 and inventories were applied at least three months following the adaptation period and the end of adjustments. This period was respected as the OHIP‐EDENT asks about the perceptions within a period of three months 32 ; thus, the adaptation and adjustment phase would not influence results.…”