Kim Ye-Jin, Ko Kyung-Ho, Huh Yoon-Hyuk, Cho Lee-Ra, Park Chan-Jin
Int J Oral Maxillofac Implants. 2021 Nov-Dec;36(6):1139-1146. doi: 10.11607/jomi.8962.
The occlusal force and occlusal contact area may be used to evaluate oral function following restoration of a missing tooth. This study aimed to monitor the initial changes in these factors after single molar implant restoration.
Patients who underwent single implant restoration between December 2018 and September 2019 were recruited for this study. Occlusal force was measured before, immediately after, and 1 month after prosthesis placement. The occlusal contact area was evaluated immediately and 1 month after the placement. Data were grouped by sex, restored tooth, and restored side for analysis.
In most groups, occlusal force was significantly increased 1 month after the placement compared with that before placement (P < .05), and the change was more significant in the first molar group than in the second molar group. There was a significant difference in the occlusal contact area of the implant prosthesis immediately and 1 month after placement when a thickness of 9 μm was used. The occlusal contact area of the natural tooth in the mesial side was significantly increased 1 month after placement (P < .05).
Occlusal force was significantly increased 1 month after implant restoration, and restoration of the first molar had the most significant effect on the occlusal force. Occlusal contact areas may differ according to the occlusal indicator used in the clinical setting because the changes were significant with only 0 to 9 μm.
牙合力和牙合接触面积可用于评估缺失牙修复后的口腔功能。本研究旨在监测单颗磨牙种植修复后这些因素的初始变化。
招募2018年12月至2019年9月期间接受单颗种植修复的患者进行本研究。在义齿放置前、放置后即刻以及放置后1个月测量牙合力。在放置后即刻和1个月评估牙合接触面积。数据按性别、修复牙位和修复侧分组进行分析。
在大多数组中，与放置前相比，放置后1个月牙合力显著增加（P < 0.05），且第一磨牙组的变化比第二磨牙组更显著。当使用9μm的厚度时，种植义齿的牙合接触面积在放置后即刻和1个月时有显著差异。放置后1个月，天然牙近中侧的牙合接触面积显著增加（P < 0.05）。
种植修复后1个月牙合力显著增加，第一磨牙的修复对牙合力的影响最为显著。由于仅0至9μm的变化就具有显著性，临床中使用的牙合指标不同，牙合接触面积可能会有所差异。
