Pellicer-Chover Hilario, Viña-Almunia José, Romero-Millán Javier, Peñarrocha-Oltra David, García-Mira Berta, Peñarrocha-Diago María
Universidad de Valencia, Clínica Odontológica, Unidad de Cirugía Bucal, C/ Gascó Oliag 1, 46021 Valencia, Spain
Med Oral Patol Oral Cir Bucal. 2014 May 1;19(3):e302-7. doi: 10.4317/medoral.19477.
To investigate the relation between occlusal loading and peri-implant clinical parameters (probing depth, bleeding on probing, gingival retraction, width of keratinized mucosa, and crevicular fluid volume) in patients with implant-supported complete fixed prostheses in both arches.
This clinical study took place at the University of Valencia (Spain) dental clinic. It included patients attending the clinic for regular check-ups during at least 12 months after rehabilitation of both arches with implant-supported complete fixed ceramo-metallic prostheses. One study implant and one control implant were established for each patient using the T-Scan®III computerized system (Tesco, South Boston, USA). The maxillary implant closest to the point of maximum occlusal loading was taken as the study implant and the farthest (with least loading) as the control. Occlusal forces were registered with the T-Scan® III and then occlusal adjustment was performed to distribute occlusal forces correctly. Peri-implant clinical parameters were analyzed in both implants before and two and twelve months after occlusal adjustment.
Before occlusal adjustment, study group implants presented a higher mean volume of crevicular fluid (51.3 ± 7.4 UP) than the control group (25.8 ± 5.5 UP), with statistically significant difference. Two months after occlusal adjustment, there were no significant differences between groups (24.6 ± 3.8 UP and 26 ± 4.5 UP respectively) (p=0.977). After twelve months, no significant differences were found between groups (24.4 ± 11.1 UP and 22.5 ± 8.9 UP respectively) (p=0.323). For the other clinical parameters, no significant differences were identified between study and control implants at any of the study times (p>0.05).
Study group implants receiving higher occlusal loading presented significantly higher volumes of crevicular fluid than control implants. Crevicular fluid volumes were similar in both groups two and twelve months after occlusal adjustment.
研究双侧种植支持式全口固定义齿患者的咬合负荷与种植体周围临床参数（探诊深度、探诊出血、牙龈退缩、角化黏膜宽度和龈沟液量）之间的关系。
本临床研究在西班牙巴伦西亚大学牙科诊所进行。研究对象包括在双侧用种植支持式全口烤瓷金属固定义齿修复后至少12个月来诊所进行定期检查的患者。使用T-Scan®III计算机系统（美国南波士顿的Tesco公司）为每位患者设置一枚研究种植体和一枚对照种植体。将上颌最接近最大咬合负荷点的种植体作为研究种植体，最远（负荷最小）的作为对照种植体。用T-Scan®III记录咬合力，然后进行咬合调整以正确分配咬合力。在咬合调整前以及调整后2个月和12个月，对两枚种植体的种植体周围临床参数进行分析。
咬合调整前，研究组种植体的龈沟液平均量（51.3±7.4 UP）高于对照组（25.8±5.5 UP），差异有统计学意义。咬合调整后2个月，两组之间无显著差异（分别为24.6±3.8 UP和26±4.5 UP）（p = 0.977）。12个月后，两组之间无显著差异（分别为24.4±11.1 UP和22.5±8.9 UP）（p = 0.323）。对于其他临床参数，在任何研究时间，研究种植体与对照种植体之间均未发现显著差异（p>0.05）。
接受较高咬合负荷的研究组种植体的龈沟液量显著高于对照种植体。咬合调整后2个月和12个月，两组的龈沟液量相似。
