AlTarawneh Sandra, AlHadidi Abeer, Hamdan Ahmad As, Shaqman Murad, Habib Emad
Department of Prosthodontics, School of Dentistry, The University of Jordan, Amman, Jordan.
Department of Oral and Maxillofacial Surgery, Oral Medicine and Periodontology, School of Dentistry, The University of Jordan, Amman, Jordan.
J Prosthodont. 2018 Apr;27(4):321-328. doi: 10.1111/jopr.12675. Epub 2017 Dec 13.
To evaluate labial and palatal bone thickness at the maxillary anterior teeth as well as distance from cemento-enamel junction (CEJ) to bone crest using cone beam computed tomography (CBCT).
Measurements were obtained for maxillary anterior teeth of 120 subject CBCT volumes including thickness of labial and palatal plates of bone (coronal, middle, and apical thirds), and distance between CEJ and alveolar bone crest mid-labially, mesially, and distally.
The mean value of bone thickness at coronal, middle, and apical thirds of the labial side for central incisor roots were respectively: 0.73, 0.69, 0.60 (mm), for lateral incisors: 0.70, 0.61, 0.49 (mm), and for canines: 0.74, 0.53, 040 (mm). The thickness of palatal bone was significantly larger. The mean distance between CEJ and mid-labial bone crest for all sites was 2.16 mm.
Labial bone thickness is thin in the vast majority of maxillary anterior teeth. Use of CBCT facilitates planning for immediate implant placement and is helpful in the decision-making process when further bone augmentation is needed.
使用锥形束计算机断层扫描（CBCT）评估上颌前牙唇侧和腭侧骨厚度以及从牙骨质-釉质界（CEJ）到牙槽嵴顶的距离。
对120例受试者的上颌前牙CBCT图像进行测量，包括唇侧和腭侧骨板厚度（冠部、中部和根尖三分之一处），以及CEJ与唇侧、近中侧和远中侧牙槽嵴顶之间的距离。
中切牙根唇侧冠部、中部和根尖三分之一处的骨厚度平均值分别为：0.73、0.69、0.60（mm），侧切牙分别为：0.70、0.61、0.49（mm），尖牙分别为：0.74、0.53、0.40（mm）。腭侧骨厚度明显更大。所有部位CEJ与唇侧牙槽嵴顶中部之间的平均距离为2.16 mm。
绝大多数上颌前牙唇侧骨厚度较薄。CBCT的使用有助于即刻种植植入的规划，并且在需要进一步骨增量时有助于决策过程。
