- 期刊
台灣人硬腭黏膜厚度在電腦斷層影像的研究
Thickness of Palatal Masticatory Mucosa Using CT Image in Taiwanese
摘要
硬腭區的齒齦，最常被牙醫師利用做爲軟組織移植的來源，軟組織的厚度是影響移植手術成功與否的關鍵之一，因此，本研究的目的是利用電腦斷層掃描影像，利量硬胖區犬齒到第二大臼齒區的齒齦厚度。本研究分析20個電腦斷層影像(CT image)，男性12位、女性8位；平均年齡爲33.17±10.56歲。從上顎犬齒到第二大臼齒區域，由每顆牙齒的腭側齒齦邊緣，每間距a:3公厘、b:6公厘、c:9公厘、d:12公厘，共定位出20個點，作爲利量齒齦厚度的部位。並進一步分析齒齦厚度與性別、年齡、以及腭穹窿的關係。結果顯示20位受檢者硬腭齒齦平均厚度爲3.58±0.45公厘。男性平均齒齦厚度3.64±0.52公厘，女性平均齒齦厚度3.50±0.33公厘，並無統計學上的差異；隨著年齡增長，齒齦厚度會隨著增加；齒齦平均厚度：犬齒3.33±0.8公厘、第一小臼齒3.55±0.65公厘、第二小臼齒3.62±0.64公厘、第一大臼齒3.39±0.84公厘、第二大臼齒4.02±1.14公厘。除了犬齒的c，d點及第二大臼齒的b點外，其餘量測點隨著距離齒齦邊緣越遠，齒齦的厚度越厚，腭穹窿(palatal vault)的高度，與硬腭齒齦的厚度沒有統計學上的關聯性。結論：硬腮齒齦的平均厚度，從犬齒區到第二小臼齒區是逐漸增加的，犬齒區域是最薄的，而第二大臼齒則是最厚的區域。
並列摘要
Background: The palatal masticatory mucosa is widely used as a donor material in periodontal plastic surgery which fulfills the esthetic and functional demands. The thickness of the graft tissue is an important factor for a success outcome. The aim of this study was to measure the thickness of masticatory mucosa in the posterior palatal area using computerized tomography (CT) image. Material and Methods: The measurements were calculated by CT images of 20 subjects, 8 females and 12 males with mean age of 33.17±10.56 years old (range from 20 to 60 years old). Twenty measurement points were defined in the hard palate, Marking 4 points 3 mm separately of each tooth margin toward middle palatine suture at canine, first and second premolars, as well as first and second molars. The radiographic measurements were used after calibration. The data were analyzed to determine the differences in the mucosal thickness related to gender, age, tooth position, and palatal vault. Results: The overall mean thickness of the palatal masticatory mucosa was 3.58±0.45mm (range from 3.33 to 4.02mm). Females had thinner mean masticatory mucosa (3.50±0.33mm) than that of males (3.64±0.52mm), however, there is no statistically significant differences . The thickness of the palatal masticatory mucosa increased with age. The mean thickness according to tooth site was 3.33±0.8mm (maxillary canine), 3.55±0.65 mm (first premolar), 3.62±0.64mm (second premolar), 3.39±0.84mm (first molar), and 4.02±1.14mm (second molar). There was an overall increase in the thickness of the palatal masticatory mucosa as the distance from the gingival margin to the middle palatine suture increased, with the exception of the Canine-c, Canine-d, 2nd Molar-b region. There was no significant difference in the thickness of the palatal masticatory mucosa between the groups with high or low palatal vaults. Conclusions: The palatal masticatory mucosa thickness increased from the canine to premolar region but decreased at the first molar region and increased again in the second molar region, with the thinnest area at the canine region and the thickest at the second molar region. The premolar region seems to be the most appropriate donor site that contains a uniformly thick mucosa. CT image can be considered an alternative method for the measurement of palatal soft tissue thickness.