引導滑板誘導髁頭中心關係位之研究

有許多誘導中心關係位的操作方法被提出，引導滑板(Sliding guiding inclined gauge)由前方去程式裝置改良而來，使用極為便利，但是並無文獻對於使用引導滑板誘導中心關係作探討。本研究目的是評估引導滑板誘導中心關係之再現性及左右髁頭在中心關係髁頭點與最大咬頭嵌合位間之三度空間之位差。本研究共25名（男15名，女10名，年齡22~30歲）顳顎關節健康且齒列完整的受測者，受測者上下顎石膏模型以最終樞紐軸作為後方參考點，作面弓轉移置位上顎模型，然後再以最大咬頭嵌合位置位下顎模型於Denar半調節咬合器上。使用引導滑板誘導中心關係，顎間關係以中心關係位咬合記錄三次。將上下顎模型轉移到Vericheck，在兩側垂直與水平臂懸臂的方格紙標示所有受試者之中心關係位及最大咬頭嵌合位，使用Dial Caliper計算中心關係髁頭位相對於最大咬頭嵌合位前一後、上一下、內一外方向兩者間的距離。結果以重複測量可信度係數來表示引導滑板誘導取得之中心關係位髁頭點之再現性在各方向為0.84~0.87之間；在垂直平面上平均中心關係位之髁頭點在最大咬頭嵌合位的後方0.12mm、下方0.33mm，水平平面上在最大咬頭嵌合位的外側0.01mm、前方0.18mm，中心關係與最大咬頭嵌合位三度空間髁頭點的位差大於80%都在小於1.0mm的範圍內。所以使用引導滑板誘導多數牙齒存在的患者的中心關係是一種便利、可行而且穩定的方法。

關鍵字

引導滑板；中心關係位；再現性

並列摘要

Many methods were suggested for guiding the centric relation CR position of the mandible. Sliding guiding inclined gauge was designed to replace anterior deprogramming devices and can be used quickly. We didn't find the article for the sliding guiding inclined gauge about accuracy and reproducibility. The purpose of this study was evaluating the reproducibility of CR records and the difference between maximal intercuspal position and CR on sliding guiding inclined gauge. Material and Method: Twenty five healthy TMJ and natural dentition subjects were selected. The stone casts of all subjects were mounted by a face-bow transfer to Denar articulator and the posterior reference points were located on the hinge axis of each subject. The lower casts were mounted by maximal intercuspal position MIP. Then all the mounted upper and lower casts were transferred to Vericheck. Three CR registrations were taken by the sliding guiding inclined gauge on all subjects. The condylar points were marked upon the recording papers which attached on the vertical and horizontal plates of Vericheck after each CR records located. All the marks of the condylar points getting from the guiding methods of 25 subjects were measured by using the condylar points of the MIP as a basis. All the data were calculated and analyzed, and then examined by the reliability of repeated measures. The reproducibility of CR getting from the sliding guiding inclined gauge in each dimension was between 0.84~0.87. The position and distance of condylar points between CR and MIP were 0.12mm posteriorly and 0.33mm inferiorly in vertical plane and 0.01mm laterally and 0.18mm anteriorly in horizontal plane and within the area of 1mm^2 on each plane was above 80%. Therefore, guiding the centric relation by using the sliding guiding inclined gauge and recording with flowable material is a quickly, accuracy and reproducible method.

並列關鍵字

sliding guiding inclined gauge ； centric relation ； reproducibility

國際替代計量

引導滑板誘導髁頭中心關係位之研究

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