中华口腔正畸学杂志
中華口腔正畸學雜誌
중화구강정기학잡지
CHINESE JOURNAL OF ORTHODONTICS
2013年
2期
81-84
,共4页
刘颖%肖丹娜%孙留振%范向飞%高辉
劉穎%肖丹娜%孫留振%範嚮飛%高輝
류영%초단나%손류진%범향비%고휘
骨性Ⅲ类错(骀)%牙弓宽度%基骨弓宽度%锥形束CT
骨性Ⅲ類錯(駘)%牙弓寬度%基骨弓寬度%錐形束CT
골성Ⅲ류착(태)%아궁관도%기골궁관도%추형속CT
Skeletal class Ⅲ malocclusion%Dental arch width%Basal bone arch width%CBCT
目的 探讨骨性Ⅲ类错(骀)患者牙弓、基骨弓宽度及二者协调性,为临床诊断和治疗提供理论依据.方法 选择骨性Ⅲ类错(骀)患者33例为实验组,47例个别正常(骀)为对照组,利用锥形束CT扫描颌面部,将扫描后图像导入Mimics10.01图像处理软件分别测量牙弓宽度、基骨弓宽度,并计算上下颌对应宽度之差,对测量结果进行独立样本t检验.结果 骨性Ⅲ类错(骀)组上颌牙弓宽度与个别正常(骀)组比较无显著性差异,但下颌牙弓宽度大于正常(骀),其中下颌第一磨牙处平均宽度正常(骀)为(56.26±3.09)mm,骨型Ⅲ类患者为(57.78±3.22)mm,差异有统计学意义(P＜0.05)；骨性Ⅲ类错(骀)上颌基骨弓宽度测量值均小于对照组,其中在上颌第二前磨牙处正常(骀)为(59.11±5.97)mm,骨型Ⅲ类患者为(56.23±5.28)mm,有统计学差异(P＜0.05),下颌基骨弓宽度均大于对照组,其中在前磨牙及第一磨牙处分别为(47.44±2.96)mm、(59.81±3.87)mm和(76.20±4.20)mm,与正常(骀)相比差异显著(P＜0.05).骨性Ⅲ类错(骀)上下颌基骨弓宽度差值均小于正常(骀)(P＜0.01),而牙弓宽度差值仅在尖牙处差异显著(P＜0.05),其余牙位测量项目无统计学差异.结论 ①骨性Ⅲ类错(骀)组上颌基骨宽度发育不足,下颌基骨宽度发育过度.②骨性Ⅲ类错(骀)的宽度不协调表现在基骨水平,牙弓对基骨弓宽度不调有代偿.
目的 探討骨性Ⅲ類錯(駘)患者牙弓、基骨弓寬度及二者協調性,為臨床診斷和治療提供理論依據.方法 選擇骨性Ⅲ類錯(駘)患者33例為實驗組,47例箇彆正常(駘)為對照組,利用錐形束CT掃描頜麵部,將掃描後圖像導入Mimics10.01圖像處理軟件分彆測量牙弓寬度、基骨弓寬度,併計算上下頜對應寬度之差,對測量結果進行獨立樣本t檢驗.結果 骨性Ⅲ類錯(駘)組上頜牙弓寬度與箇彆正常(駘)組比較無顯著性差異,但下頜牙弓寬度大于正常(駘),其中下頜第一磨牙處平均寬度正常(駘)為(56.26±3.09)mm,骨型Ⅲ類患者為(57.78±3.22)mm,差異有統計學意義(P＜0.05)；骨性Ⅲ類錯(駘)上頜基骨弓寬度測量值均小于對照組,其中在上頜第二前磨牙處正常(駘)為(59.11±5.97)mm,骨型Ⅲ類患者為(56.23±5.28)mm,有統計學差異(P＜0.05),下頜基骨弓寬度均大于對照組,其中在前磨牙及第一磨牙處分彆為(47.44±2.96)mm、(59.81±3.87)mm和(76.20±4.20)mm,與正常(駘)相比差異顯著(P＜0.05).骨性Ⅲ類錯(駘)上下頜基骨弓寬度差值均小于正常(駘)(P＜0.01),而牙弓寬度差值僅在尖牙處差異顯著(P＜0.05),其餘牙位測量項目無統計學差異.結論 ①骨性Ⅲ類錯(駘)組上頜基骨寬度髮育不足,下頜基骨寬度髮育過度.②骨性Ⅲ類錯(駘)的寬度不協調錶現在基骨水平,牙弓對基骨弓寬度不調有代償.
목적 탐토골성Ⅲ류착(태)환자아궁、기골궁관도급이자협조성,위림상진단화치료제공이론의거.방법 선택골성Ⅲ류착(태)환자33례위실험조,47례개별정상(태)위대조조,이용추형속CT소묘합면부,장소묘후도상도입Mimics10.01도상처리연건분별측량아궁관도、기골궁관도,병계산상하합대응관도지차,대측량결과진행독립양본t검험.결과 골성Ⅲ류착(태)조상합아궁관도여개별정상(태)조비교무현저성차이,단하합아궁관도대우정상(태),기중하합제일마아처평균관도정상(태)위(56.26±3.09)mm,골형Ⅲ류환자위(57.78±3.22)mm,차이유통계학의의(P＜0.05)；골성Ⅲ류착(태)상합기골궁관도측량치균소우대조조,기중재상합제이전마아처정상(태)위(59.11±5.97)mm,골형Ⅲ류환자위(56.23±5.28)mm,유통계학차이(P＜0.05),하합기골궁관도균대우대조조,기중재전마아급제일마아처분별위(47.44±2.96)mm、(59.81±3.87)mm화(76.20±4.20)mm,여정상(태)상비차이현저(P＜0.05).골성Ⅲ류착(태)상하합기골궁관도차치균소우정상(태)(P＜0.01),이아궁관도차치부재첨아처차이현저(P＜0.05),기여아위측량항목무통계학차이.결론 ①골성Ⅲ류착(태)조상합기골관도발육불족,하합기골관도발육과도.②골성Ⅲ류착(태)적관도불협조표현재기골수평,아궁대기골궁관도불조유대상.
Objective To provide references for diagnosis andtreatment plan of skeletal Class Ⅲ malocclusion based on the study of dental arch widths,basal bone widths and their coordination.Methods Experimental groupconsists of 33 skeletal Class Ⅲ malocclusion cases and control groupconsists of 47 individual normal occlusion cases.The data samples of thetwo groups were derived from Cone Beam Computed Tomography (CBCT) scans,and were used to measure dental arch widths and basalbone arch widths.The differences between the paired maxilla and mandible measurements were calculated.All the measurements and calculations were done in Mimics 10.01.Independentsample t-testwas used to compare the two groups.Results Differences between the maxillary dental arch widths were unapparent; skeletal Class Ⅲ malocclusion had a tendency of larger mandibular dental arch widths.Maxillary basalbone archwidths of Class Ⅲ malocclusion groupwere narrower compared with normal occlusion samples.The second premolar segment was significantly narrower.Moreover,mandibular premolar and molarbasalbone arch widths of the skeletal Class Ⅲ malocclusion were significantly larger than the normal occlusion groups.Difference between maxillary and mandibular basal bone arch widths was larger in skeletal Class Ⅲ malocclusion.Difference between maxillary and mandibular dental arch widths in canine area was smaller while other dental segment width difference showed no statistical differences.Conclusions (1)In transverse dimension,maxillary basal bone arch grows insufficiently,while the mandibular basal bone archgrows excessively in skeletal class Ⅲ patients.(2) Widthdiscrepancy inskeletal class Ⅲ is at basal bonelevel.Dental arch showssome extent of compensation.
