Mustafa Ayman G, Allouh Mohammed Z, Alshehab Rawan M
Department of Anatomy, Faculty of Medicine, Jordan University of Science and Technology, Irbid, 22110, Jordan.
Department of Anatomy, Faculty of Medicine, Jordan University of Science and Technology, Irbid, 22110, Jordan.
J Forensic Leg Med. 2015 Apr;31:19-22. doi: 10.1016/j.jflm.2015.01.002. Epub 2015 Jan 16.
This study investigated the morphometric changes that occur in palatal rugae during orthodontic treatment. The potential impact of these changes on the individuality of the palatal rugae patterns and on the use of palatal rugae patterns in human identification was also explored. Fifty pairs of pre- and post-orthodontic treatment dental casts were used. The palatal rugae patterns were compared between each pre-treatment cast and its post-treatment counterpart to reveal any morphometric changes. In addition, the individuality of the pre- and post-treatment sets of the casts was evaluated. Finally, a matching test of the palatal rugae patterns was performed in which the ability to match each post-treatment cast with its duplicate was compared with the ability to match that post-treatment cast with its pre-treatment counterpart. Statistical analysis of the results revealed the incidence of several morphometric changes, including segmentation (22%); unification (20%); changes in orientation (6%), shape (6%), and length (28%); anteroposterior displacement of the medial (54%) and lateral (60%) end of the ruga; and mediolateral displacement of the medial end of ruga (20%). The individuality of the palatal rugae patterns was confirmed in both pre- and post-treatment sets of casts. Finally, the mean percentage of correct matches was found to be significantly higher when the post-treatment casts were matched with their duplicates compared to when they were matched with their pre-treatment counterparts. The study revealed that Orthodontic treatment induces various morphometric changes in the palatal rugae patterns. These changes may potentially complicate palatal rugae-based human identification.
本研究调查了正畸治疗过程中腭皱襞发生的形态计量学变化。还探讨了这些变化对腭皱襞图案个体性以及在人类识别中使用腭皱襞图案的潜在影响。使用了50对正畸治疗前后的牙模。比较每个治疗前牙模与其治疗后对应牙模的腭皱襞图案，以揭示任何形态计量学变化。此外，评估了治疗前后牙模组的个体性。最后，进行了腭皱襞图案的匹配测试，将每个治疗后牙模与其复制品匹配的能力与将该治疗后牙模与其治疗前对应牙模匹配的能力进行比较。结果的统计分析揭示了几种形态计量学变化的发生率，包括分割（22%）；融合（20%）；方向（6%）、形状（6%）和长度（28%）的变化；皱襞内侧（54%）和外侧（60%）末端的前后移位；以及皱襞内侧末端的内外侧移位（20%）。在治疗前后的牙模组中均证实了腭皱襞图案的个体性。最后，发现与治疗前对应牙模匹配相比，治疗后牙模与其复制品匹配时正确匹配的平均百分比显著更高。该研究表明，正畸治疗会在腭皱襞图案中引起各种形态计量学变化。这些变化可能会使基于腭皱襞的人类识别复杂化。
