Zaky Magdy Mohamed, Fayed Nabila Ali, Shehab Mohamed Farid
Faculty of Dentistry, Cairo University, Giza, Egypt.
Alahrar Teaching Hospital at Zagazig, Zagazig, Egypt.
Oral Maxillofac Surg. 2020 Mar;24(1):19-24. doi: 10.1007/s10006-019-00810-0. Epub 2019 Nov 12.
This study was to assess the efficiency of using a combination of one microplate and one miniplate for management of patients with parasymphyseal mandibular fractures versus two miniplates through measurement of the biting force.
The study sample consisted of sixteen patients with an isolated mandibular fracture and randomly divided into two groups; group I was managed using two miniplates, while group II was managed using a combination of one microplate at subapical region and one miniplate at the inferior border of the mandible. The biting force was measured at 1 week, 1 month, and 3 months follow-up visits. A control group consisted of 40 healthy adult volunteers was selected to measure the normal biting force.
The mean of the normal biting force of the control group was 435 N ± 219, 103.2 N ± 4.8, and 390.6 N ± 195.4 at right molar, incisor, and left molar regions respectively. There was a statistically non-significant difference regarding the bite force of both study groups, with a progressive increase through the different follow-up visits and a period of 3 months is sufficient for recovery of patients to regain their normal biting force.
Consequently a combination of one microplate and one miniplate is efficient for the management of isolated parasymphyseal mandibular fracture in the same way as two miniplates.
本研究旨在通过测量咬合力，评估使用一块微型钢板和一块小型钢板联合治疗下颌骨髁突骨折患者与使用两块小型钢板治疗的效果。
研究样本包括16例孤立性下颌骨骨折患者，随机分为两组；第一组使用两块小型钢板治疗，而第二组在根尖下区域使用一块微型钢板和在下颌骨下缘使用一块小型钢板联合治疗。在随访1周、1个月和3个月时测量咬合力。选择由40名健康成年志愿者组成的对照组来测量正常咬合力。
对照组在右侧磨牙、切牙和左侧磨牙区域的正常咬合力平均值分别为435N±219、103.2N±4.8和390.6N±195.4。两个研究组的咬合力在统计学上无显著差异，在不同的随访期间咬合力逐渐增加，3个月的时间足以使患者恢复到正常咬合力。
因此，一块微型钢板和一块小型钢板联合治疗与两块小型钢板治疗孤立性下颌骨髁突骨折的效果相同。
