中华口腔医学杂志
中華口腔醫學雜誌
중화구강의학잡지
Chinese Journal of Stomatology
2013年
4期
211-215
,共5页
周芷萱%沈铭%陆胜男%李俊%陈宁
週芷萱%瀋銘%陸勝男%李俊%陳寧
주지훤%침명%륙성남%리준%진저
牙种植%解剖学,局部%锥形束CT
牙種植%解剖學,跼部%錐形束CT
아충식%해부학,국부%추형속CT
Dental Implantation%Anatomy,Regional%Cone-beam CT
目的 通过锥形束CT图像分析与石膏模型测量,研究成人上前牙牙冠、牙槽嵴顶骨缘、牙龈形态的相关性,为临床种植美学提供解剖依据.方法 选取平均年龄为(23.08 ±6.30)岁的60名牙周健康且无明显错(拾)畸形的汉族成人锥形束CT三维重建图像,测量上前牙唇侧牙槽嵴顶骨缘弧度、牙间骨板宽度和高度,在石膏模型上测量唇侧游离龈缘弧度及牙龈乳头、中切牙牙冠宽高度进行比较.按牙冠宽/高比值分为两组,取比值最高的10名纳入短宽型牙冠组；取比值最低的10名纳入长窄型牙冠组；并分别比较两组上前牙游离龈缘弧度、牙龈乳头形态的差异.结果 ①上前牙区中切牙、侧切牙、尖牙对应的唇侧牙槽嵴顶骨缘弧度分别为(2.33 ±0.16)、(2.29±0.22)、(2.06±0.15),游离龈缘弧度分别为(1.65 ±0.14)、(1.57 ±0.17)、(1.49±0.13),不同牙位对应的骨缘弧度间、龈缘弧度间均有差异,相同牙位对应的骨缘弧度和龈缘弧度显著相关(P＜0.05)；②除中切牙与侧切牙之间外,其余牙间区骨板外形与对应牙龈乳头外形显著相关(P＜0.01)；③与短宽型牙冠相比,长窄型牙冠唇侧游离龈缘弧度较小(1.52 ±0.10)、更为弯曲(P =0.002),牙龈乳头更加细长(牙龈乳头宽高比值(2.16±0.33)(P=0.000).结论 中国汉族成人上前牙游离龈缘弧度、牙龈乳头形态与牙冠形态、牙槽嵴顶骨缘形态显著相关；牙冠呈长窄型、唇侧游离龈缘弧度小、牙龈乳头细长者种植修复的美学风险更大.
目的 通過錐形束CT圖像分析與石膏模型測量,研究成人上前牙牙冠、牙槽嵴頂骨緣、牙齦形態的相關性,為臨床種植美學提供解剖依據.方法 選取平均年齡為(23.08 ±6.30)歲的60名牙週健康且無明顯錯(拾)畸形的漢族成人錐形束CT三維重建圖像,測量上前牙脣側牙槽嵴頂骨緣弧度、牙間骨闆寬度和高度,在石膏模型上測量脣側遊離齦緣弧度及牙齦乳頭、中切牙牙冠寬高度進行比較.按牙冠寬/高比值分為兩組,取比值最高的10名納入短寬型牙冠組；取比值最低的10名納入長窄型牙冠組；併分彆比較兩組上前牙遊離齦緣弧度、牙齦乳頭形態的差異.結果 ①上前牙區中切牙、側切牙、尖牙對應的脣側牙槽嵴頂骨緣弧度分彆為(2.33 ±0.16)、(2.29±0.22)、(2.06±0.15),遊離齦緣弧度分彆為(1.65 ±0.14)、(1.57 ±0.17)、(1.49±0.13),不同牙位對應的骨緣弧度間、齦緣弧度間均有差異,相同牙位對應的骨緣弧度和齦緣弧度顯著相關(P＜0.05)；②除中切牙與側切牙之間外,其餘牙間區骨闆外形與對應牙齦乳頭外形顯著相關(P＜0.01)；③與短寬型牙冠相比,長窄型牙冠脣側遊離齦緣弧度較小(1.52 ±0.10)、更為彎麯(P =0.002),牙齦乳頭更加細長(牙齦乳頭寬高比值(2.16±0.33)(P=0.000).結論 中國漢族成人上前牙遊離齦緣弧度、牙齦乳頭形態與牙冠形態、牙槽嵴頂骨緣形態顯著相關；牙冠呈長窄型、脣側遊離齦緣弧度小、牙齦乳頭細長者種植脩複的美學風險更大.
목적 통과추형속CT도상분석여석고모형측량,연구성인상전아아관、아조척정골연、아간형태적상관성,위림상충식미학제공해부의거.방법 선취평균년령위(23.08 ±6.30)세적60명아주건강차무명현착(습)기형적한족성인추형속CT삼유중건도상,측량상전아진측아조척정골연호도、아간골판관도화고도,재석고모형상측량진측유리간연호도급아간유두、중절아아관관고도진행비교.안아관관/고비치분위량조,취비치최고적10명납입단관형아관조；취비치최저적10명납입장착형아관조；병분별비교량조상전아유리간연호도、아간유두형태적차이.결과 ①상전아구중절아、측절아、첨아대응적진측아조척정골연호도분별위(2.33 ±0.16)、(2.29±0.22)、(2.06±0.15),유리간연호도분별위(1.65 ±0.14)、(1.57 ±0.17)、(1.49±0.13),불동아위대응적골연호도간、간연호도간균유차이,상동아위대응적골연호도화간연호도현저상관(P＜0.05)；②제중절아여측절아지간외,기여아간구골판외형여대응아간유두외형현저상관(P＜0.01)；③여단관형아관상비,장착형아관진측유리간연호도교소(1.52 ±0.10)、경위만곡(P =0.002),아간유두경가세장(아간유두관고비치(2.16±0.33)(P=0.000).결론 중국한족성인상전아유리간연호도、아간유두형태여아관형태、아조척정골연형태현저상관；아관정장착형、진측유리간연호도소、아간유두세장자충식수복적미학풍험경대.
Objective To investigate the correlation among the morphology of crown,alveolar ridge crest and gingiva in maxillary anterior region of adults and to provide anatomical basis for clinical implant esthetics.Methods Sixty Han-Chinese with healthy peridontium were selected in this study.The curvature of labial alveolar crest,the length and height of inter-proximal bone were measured on 3-D model reconstructed from cone-beam CT(CBCT) images,and the curvature of free gingiva,the width and height of inter-dental papilla and central incisor crown were evaluated on casts.The ratio of crown width to height was ranked and the 10 ranked highest were categorized as group Short-Wide (SW),the 10 ranked lowest were selected as group Long-Narrow (LN).Results In maxillary anterior region,the curvature angle of both alveolar crest and marginal gingiva were significantly different among different tooth regions,but the alveolar and gingival curvature was significantly correlated in the same region (P ＜ 0.05).The morphology of inter-proximal bone and papilla was significantly correlated (P ＜ 0.01),except the region between central and lateral incisors (P =0.625,P ＞ 0.05).Compared to group SW,group LN formed a pronounced scalloped contour of gingival margin(P =0.002) and slender inter-dental papilla(P =0.000).Conclusions The free gingival curvature and inter-dental papillary morphology are significantly correlated with the morphology of crown and alveolar ridge crest in maxillary anterior region of Han-Chinese.Individuals with long-narrow crown,pronounced scalloped marginal gingiva and slender inter-dental papilla are susceptible to risk implant esthetics.
