上颌第一前磨牙X线法髓腔物理量  

Quantification of pulp cavities in the first maxillary premolar tooth using radiography

作　　者：罗特坚[1] 丁继固[2] 

机构地区：[1]邵阳医学高等专科学校解剖学教研室,邵阳422000 [2]湖北科技学院人体解剖学教研室,咸宁437100

出　　处：《解剖学杂志》2013年第2期217-219,共3页Chinese Journal of Anatomy

摘　　要：目的：探讨上颌第1前磨牙X线片法髓腔物理量方面的数据。方法：用X线平行投照法拍摄实体牙颊舌向和近远中向X线片牙影像，根据本研究对髓腔根管定的分型标准对根管进行分型。用电脑配套的柯达成像系统测量X线片牙的髓高、髓宽、根中颊径、根中舌径、根尖颊径和根尖舌径。用SPSS17．0软件统计处理X线片牙的髓腔物理量值。结果：100颗上颌第1前磨牙中X线片牙根管有6种类型，I-1-1型占33％，I-2-2型占17％，工-2-1型占13％，I-1-2型占4Z，I-2-1-2型占3％，Ⅱ-2-2型占30％。X线片牙的测量值（mm）显示，髓高3．09±1．18，髓宽3．88±0．61，根中颊径1．76±1．18，根中舌径0．59±0．34，根尖颊径0．79±0．39，根尖舌径0．35±0．28。髓腔物理量各测值差异均存在统计学意义。结论：上述结果说明，湖北地区上颌第1前磨牙根管类型主要是I-1-1型，I-2-2型，Ⅱ-2-2型。X线片牙物理量测值经相关及回归分析，如果有相关性的配对项，可用回归方程中的自变量值（X）来推测因变量的值（Y），为口腔临床实践提供髓腔物理量方面的未知数据。Objective： To explore the feasibility to quantify the pulp cavities in the first maxillary premolar tooth using radio- graphy. Methods： The paralleling technique was used to obtain the buccolingual and mesiodistal photographs of the first pre- molars. And then, the root canals were classified according to our criterion. The height of dental pulp cavity, width of the dental pulp cavity, buccolingual diameters at 1/3 part of the buccal root and lingual root, as well as the buccolingual diameters at the points that 0. 5 mm of the buccal and lingual roots to corresponding root tip, were measured based on the radiographs and analyzed statistically. Results： Total 100 first maxillary premolars were classified into 6 types. In detail, 33 % belonged to type I-1-1, 17% belonged to type I-2-2, 13% belonged to type I-2-1, 4% belonged to type I-1-2, 3% belonged to type I-2-1-2, and 30% belonged to type Ⅱ-2-2. The height and width of the dental pulp cavities were 3.09±1.18 mm and 3.88 ±0. 61 mm, respectively. The buccolingual diameters at 1/3 part of the buccal root and lingual root were 1.76±1.18 mm and 0. 59±0.34 mm, respectively. And, the buccolingual diameters at the points that 0.5 mm of the buccal and lingual roots to corresponding root tips were 0. 79±0.39 mm and 0.35±0.28 mm, respectively. The above-mentioned data possessed statis- tical differences. Conclusion： The first maxillary premolars from the individuals living in Huhei province can be classified mainly into type I-1-1, 1-2-2 and Ⅱ -2-2. Correlation among these indices provide an approach to calculate unknown data based on known data.

关 键 词：上颌第1前磨牙 X线片牙 髓腔 物理量 

分 类 号：R783.5[医药卫生—口腔医学]