Rana Tarun, Khanna Rohit, Tikku Tripti, Sachan Kiran
Senior Lecturer, Seema Dental College and Hospital, Department of Orthodontics and Dentofacial Orthopedics, Rishikesh, Uttarakhand.
Professor, Babu Banarsi Das Dental College of Dental Sciences, Department of Orthodontics and Dentofacial Orthopedics, Lucknow, Uttar Pradesh, India.
J Oral Biol Craniofac Res. 2012 Jan-Apr;2(1):30-5. doi: 10.1016/S2212-4268(12)60008-6.
Many conflicting opinions have been put forth in the dental literature concerning the maxilla and its relationship to craniofacial complex. In view of this fact, this cephalometric study was conducted to determine the relationship of maxilla to cranial base in different facial types.
The sample consists of 120 pretreatment lateral cephalogram, which were categorized into three groups, normodivergent, hypodivergent, and hyperdivergent. Each group consists of 20 males and 20 females. Descriptive statistics for 11 variables were calculated.
The result of this study implies that in hyperdivergent subjects' sagittal maxillary base size was smaller and upper posterior facial height (UPFH) was increased in comparison to hypodivergent and normodivergent subjects. Upper posterior facial height has positive correlation with anterior facial height. Posterior maxillary position in relation to cranial base increases with increase in cranial flexural angle in hypodivergent subjects and vice versa in hyperdivergent subjects. Upper posterior facial height decreases with increase in cranial flexural angle in hypodivergent subjects and vice versa in hyperdivergent subjects.
牙科文献中针对上颌骨及其与颅面复合体的关系提出了许多相互矛盾的观点。鉴于这一事实，开展了此项头影测量研究，以确定不同面部类型中上颌骨与颅底的关系。
样本包括120张治疗前的头颅侧位片，分为三组：平均生长型、低角型和高角型。每组由20名男性和20名女性组成。计算了11个变量的描述性统计量。
本研究结果表明，与低角型和平均生长型受试者相比，高角型受试者的矢状上颌骨基底部尺寸较小，上颌后部面部高度（UPFH）增加。上颌后部面部高度与前部面部高度呈正相关。在低角型受试者中，相对于颅底的上颌后部位置随颅骨弯曲角度的增加而增加，而在高角型受试者中则相反。在低角型受试者中，上颌后部面部高度随颅骨弯曲角度的增加而降低，而在高角型受试者中则相反。
