Pirttiniemi P, Grön M, Alvesalo L, Heikkinen T, Osborne R
Department of Oral Development and Orthodontics, University of Oulu, Finland.
Pediatr Dent. 1994 Jul-Aug;16(4):289-93.
This study examined the relationship between the extensive use of forceps procedures during delivery and later occlusal characteristics. The work uses data collected in National Collaborative Perinatal Research Project (USA), in which more than 60,000 pregnancies and the children's health were followed by regular medical tests and examinations. Of these, a subsample of 2,074 children participated in dental examinations, including the production of dental casts with wax bites to register occlusion. A total of 84 children, 55 boys and 29 girls, were coded as having undergone difficult or very difficult forceps deliveries. A control group was matched by age, sex, race, and site of dental examination. The results show a significant increase in asymmetric molar occlusion (P < 0.005) and canine relations (P < 0.001) in the study group. The sagittal length of the mandibular arch was increased in the difficult forceps delivery group (P < 0.01). In conclusion, difficult forceps procedures are associated with a later asymmetric occlusion.
本研究调查了分娩过程中广泛使用产钳操作与后期咬合特征之间的关系。该研究采用了美国国家围产期协作研究项目收集的数据，其中超过60000例妊娠以及儿童健康状况通过定期医学检查进行跟踪。其中，2074名儿童的子样本参与了牙科检查，包括制作带有蜡咬痕的牙模以记录咬合情况。共有84名儿童（55名男孩和29名女孩）被编码为经历了困难或非常困难的产钳分娩。对照组按年龄、性别、种族和牙科检查地点进行匹配。结果显示，研究组中不对称磨牙咬合（P < 0.005）和尖牙关系（P < 0.001）显著增加。困难产钳分娩组下颌弓矢状长度增加（P < 0.01）。总之，困难产钳操作与后期不对称咬合有关。
