Poon Yi-Ching, Chang Hong-Po, Tseng Yu-Chuan, Chou Szu-Ting, Cheng Jung-Hsuan, Liu Pao-Hsin, Pan Chin-Yun
Faculty of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.
Faculty of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Dentistry, Kaohsiung Municipal Hsiao-Kang Hospital, Kaohsiung, Taiwan.
Kaohsiung J Med Sci. 2015 May;31(5):265-70. doi: 10.1016/j.kjms.2015.02.002. Epub 2015 Mar 5.
Palatal bone thickness measurements obtained by cone-beam computed tomography (CBCT) in 30 men and 28 women were evaluated for associated factors. Palatal bone thickness was measured at 20 locations unilateral to the midpalatal suture and posterior to the incisive foramen. Tongue position, presence of posterior crossbite, and palatal morphology were recorded. Lateral cephalograms acquired from CBCT data were used to calculate Frankfort-mandibular plane angles (FMA). At almost all sites, bone thickness was greater in males than in females, but the difference was statistically significant at only seven sites. Bone thickness showed no associations with tongue position, palatal morphology, or presence of posterior crossbite. In women, FMA significantly correlated with bone thickness at 12 locations. In conclusion, palatal bone thickness is unassociated with tongue position, posterior crossbite, or palatal morphology. In hyperdivergent women, however, available bone may be smaller than normal in the middle and posterior palatal areas; in such cases, a shorter than normal miniscrew may be needed to avoid penetrating the nasal cavity.
通过锥形束计算机断层扫描（CBCT）对30名男性和28名女性的腭骨厚度测量结果进行相关因素评估。在腭中缝单侧且切牙孔后方的20个位置测量腭骨厚度。记录舌位、后牙反合情况和腭部形态。从CBCT数据获取的头颅侧位片用于计算法兰克福-下颌平面角（FMA）。几乎在所有部位，男性的骨厚度均大于女性，但仅在7个部位差异具有统计学意义。骨厚度与舌位、腭部形态或后牙反合情况均无关联。在女性中，FMA与12个位置的骨厚度显著相关。总之，腭骨厚度与舌位、后牙反合或腭部形态无关。然而，在高角型女性中，腭中后部可用骨可能比正常情况小；在这种情况下，可能需要比正常短的微型螺钉以避免穿透鼻腔。
