不同垂直面型个体中咀嚼肌代谢的 A ³¹P 磁共振波谱研究
A ³¹P-magnet resonance spectroscopy study on the metabolism of human masseter in individuals with different vertical facial pattern.
机构信息
Department of Orthodontics, Technical University of Dresden, Dresden, Germany.
出版信息
Oral Surg Oral Med Oral Pathol Oral Radiol. 2013 Mar;115(3):406-14. doi: 10.1016/j.oooo.2012.11.017.
OBJECTIVE
The objective of this study was to investigate differences in masseter metabolism by (31)P-Chemical Shift Imaging (CSI) in adult individuals with different vertical facial patterns. The clinical study should be supported by functional findings at the mRNA level after orthognathic surgery.
STUDY DESIGN
Twenty-two male volunteers (mean age 24.6) were divided into a deep-bite (NL/ML 11.8 ± 2.3°) and open-bite group (NL/ML 34.1 ± 2.6°). Vertical jaw relationship, gonial angle, and masseter volume were defined and compared with the phosphate values obtained from the (31)P spectra. Student t test and regression analysis were used.
RESULTS
Phosphocreatine related strongly to muscle volume (P < .001), gonial angle (P < .001), and ML/NL angle (P < .01). Pi was found to be related to gonial angle (P < .05). Muscle volume was found to be inversely related to ML/NL (P < .01) and to the gonial angle (P < .01).
CONCLUSIONS
A difference in masseter muscle metabolism between long- and short-faced subjects was confirmed at rest position.
目的
本研究旨在通过（31）磷化学位移成像（CSI）研究不同垂直面型成人的咬肌代谢差异。该临床研究应通过正颌手术后的功能发现得到支持。
研究设计
22 名男性志愿者（平均年龄 24.6 岁）分为深覆颌组（NL/ML 11.8±2.3°）和开颌组（NL/ML 34.1±2.6°）。垂直颌关系、下颌角和咬肌体积被定义，并与（31）磷谱获得的磷酸盐值进行比较。采用学生 t 检验和回归分析。
结果
磷酸肌酸与肌肉体积（P<0.001）、下颌角（P<0.001）和 ML/NL 角（P<0.01）密切相关。Pi 与下颌角（P<0.05）有关。肌肉体积与 ML/NL（P<0.01）和下颌角（P<0.01）呈负相关。
结论
在休息位时，长面型和短面型患者的咬肌代谢存在差异。
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