Zhang R, Hao X Y, Zhang K Y, Song W P, Zeng J Y
Department of Prosthodontics, Capital Medical University School of Stomatology, Beijing 100050, China.
Department of Oral and Maxillofacial Surgery, Capital Medical University School of Stomatology, Beijing 100050, China.
Zhonghua Kou Qiang Yi Xue Za Zhi. 2021 Sep 9;56(9):909-913. doi: 10.3760/cma.j.cn112144-20210311-00109.
To investigate the changes of occlusal delay time, percentage of occlusal force and patients' subjective satisfaction of masticatory function for single implant crown in one year after the application of space reserved occlusion design. To provide data support and suggestions for clinical occlusion design. Patients who had received single posterior dental implant restoration in Department of Prosthodontics, Capital Medical University School of Stomatology from January 2019 to December 2019 were selected. At 0.5, 3, 6 and 12 months after restoration, the T-scan Ⅲ occlusal analyzer was used to detect and record the initial occlusal contact time of the natural tooth and implanted single crown, the occlusal force percentage of single implant prosthesis and corresponding tooth on the contralateral side (control teeth) on the contralateral side (control teeth) were also recorded. Subjective satisfaction with the masticatory function of the implants was recorded using visual analogue scale (VAS). The changes of occlusal delay time (the difference of the initial occlusal time between implant restoration and the natural teeth), percentage of occlusal force and patients' subjective feeling with time were analyzed. All data were analyzed by repeated measurement analysis of variance, bilatteral <0.01 was considered statistically significant. A total of 48 patients aged (36.8±8.4) years (23 males, 25 females, aged 23-50 years) were recruited. The occlusal delay time at 0.5 months was 0.15 (0.08, 0.20) s, at 3 months was 0.11 (0.06, 0.16) s, at 6 months was 0.07 (0.03, 0.13) s and at 12 months was 0.06 (0.03, 0.10) s. The occlusal delay time was shortened at every two time points, and the occlusal force percentage of the implant crown increased significantly. The percentage of occlusal force of implant prosthesis at 0.5 months was (7.7±4.8)%, at 3 months was (10.6±5.9)%, at 6 months was (12.3±6.2)% and at 12 months was (13.2±6.7)%. The most significant change was during the period of 0.5-3 months. At 0.5 months, the occlusal force of implant prosthesis was significantly lower than that of control teeth (14.3±6.5)% (<0.01). The VAS score at 0.5 months was (7.06±1.64) and was (8.71±0.74) at 12 months. The score was increased and the difference was statistically significant from 3 month to 12 month (<0.01). The change of occlusal force percentage of single posterior dental implant is most obvious within 3 months after restoration. The occlusal condition should be reexamined and adjust occlusal after 3 months of implant restoration as appropriate.
探讨预留间隙咬合设计应用后单颗种植冠在1年内的咬合延迟时间、咬合力百分比及患者咀嚼功能主观满意度的变化情况。为临床咬合设计提供数据支持及建议。选取2019年1月至2019年12月在首都医科大学附属口腔医院修复科接受单颗后牙种植修复的患者。在修复后0.5、3、6和12个月，使用T-scanⅢ咬合分析仪检测并记录天然牙与种植单冠的初始咬合接触时间，同时记录种植单冠与对侧相应牙齿（对照牙）的咬合力百分比。采用视觉模拟评分法（VAS）记录患者对种植体咀嚼功能的主观满意度。分析咬合延迟时间（种植修复与天然牙初始咬合时间之差）、咬合力百分比及患者主观感受随时间的变化情况。所有数据采用重复测量方差分析，双侧P<0.01认为差异有统计学意义。共纳入48例患者，年龄（36.8±8.4）岁（男23例，女25例，年龄23 - 50岁）。0.5个月时咬合延迟时间为0.15（0.08，0.20）s，3个月时为0.11（0.06，0.16）s，6个月时为0.07（0.03，0.13）s，12个月时为0.06（0.03，0.10）s。每两个时间点间咬合延迟时间均缩短，种植冠咬合力百分比显著增加。种植体修复体0.5个月时咬合力百分比为（7.7±4.8）%，3个月时为（10.6±5.9）%，6个月时为（12.3±6.2）%，12个月时为（13.2±6.7）%。0.5 - 3个月期间变化最为显著。0.5个月时种植体修复体咬合力显著低于对照牙（14.3±6.5）%（P<0.01）。0.5个月时VAS评分为（7.06±1.64），12个月时为（8.71±0.74）。3 - 12个月评分升高且差异有统计学意义（P<0.01）。单颗后牙种植体修复后3个月内咬合力百分比变化最为明显。种植修复3个月后应酌情重新检查咬合情况并调整咬合。
