錐形束CT分析下頜無牙頜患者前部頜弓形態(tài)對(duì)“All-on-4”種植設(shè)計(jì)的影響
發(fā)布時(shí)間：2018-07-26 16:06
【摘要】：目的:通過測(cè)量分析下頜無牙頜患者的錐形束CT(conebeam computed tomography,CBCT)圖像,測(cè)量可能植入種植體的A-P距離(anterior-posterior distance),分類前部頜弓形態(tài),探究頜弓形態(tài)對(duì)"All-on-4"遠(yuǎn)中傾斜種植體臨床設(shè)計(jì)的影響。方法:收集下頜無牙頜患者的CBCT圖像共74例,其中男性35例,女性39例,擬行"All-on-4"種植固定義齒修復(fù)。在經(jīng)頦孔并平行于牙合平面的平面上測(cè)量可能植入種植體的A-P距離,分類前部頜弓形態(tài),測(cè)量由頦孔往近中方向7.5 mm的頜骨段所跨過的頜弓弧度,探究A-P距離與該弧度的相關(guān)性。結(jié)果:74例患者測(cè)得可植入的頦孔間區(qū)種植體的A-P距離為(8.5±1.5)mm(最小為4.5 mm,最大為11.8 mm),其中≤7 mm者占12.2%(男性3例,女性6例),頜弓為方圓形;7 mm、≤9 mm者占54.0%(男性20例,女性20例),頜弓為卵圓形;9 mm者占33.8%(男性12例,女性13例),頜弓為尖圓形。測(cè)量患者頦孔前方7.5 mm頜弓段轉(zhuǎn)角弧度,左、右兩側(cè)共測(cè)得148個(gè)數(shù)據(jù),平均為15.9°±5.5°(最小為5.6°,最大為35.2°)。統(tǒng)計(jì)分析發(fā)現(xiàn),A-P距離與轉(zhuǎn)角弧度呈顯著負(fù)相關(guān)。結(jié)論:本研究中下頜無牙頜患者的前部頜弓形態(tài)中,卵圓形所占百分比最多,尖圓形次之,方圓形最少。女性方圓形頜弓者多于男性,卵圓形和尖圓形頜弓與性別無明顯相關(guān)。頜弓越方,A-P距離越小,頦孔前區(qū)頜弓弧度就越大,遠(yuǎn)中斜行種植體所需要的骨寬度就越大。下頜無牙頜患者的"All-on-4"種植固定修復(fù)采用遠(yuǎn)中斜行種植體,術(shù)前應(yīng)評(píng)估頜弓形態(tài),設(shè)計(jì)遠(yuǎn)中種植體的合理傾角,遠(yuǎn)中種植位點(diǎn)的骨寬度應(yīng)在常規(guī)要求外留有余量。方圓形頜弓是"All-on-4"種植固定修復(fù)的不利因素。
[Abstract]:Objective: to investigate the effect of the shape of mandibular arch on the clinical design of "All-on-4" distal oblique implant by measuring and analyzing the conical bundle CT (conebeam computed tomography-CBCT images of patients with edentulous mandible, measuring the A-P distance (anterior-posterior distance), classification of maxillary arch) that may be implanted into implants, and exploring the effect of maxillary arch shape on the clinical design of "All-on-4" distal oblique implants. Methods: CBCT images of 74 patients with edentulous mandible were collected, including 35 males and 39 females. "All-on-4" implant fixed denture was performed. The A-P distance of the implants was measured on the plane through the mental foramen and parallel to the occlusal plane, the shape of the maxillary arch was classified, and the arc of the mandibular arch was measured from the mental foramen to the proximal side of the mandible to 7.5 mm. To explore the correlation between A-P distance and the radians. Results the A-P distance of implantable intermental region implants was measured in 74 patients (8.5 鹵1.5) mm (, 4.5mm, max 11.8 mm), 12.2%) (M 3, F 6), mandibular arch was 7 mm round, and 鈮，
本文編號(hào)：2146541
[Abstract]:Objective: to investigate the effect of the shape of mandibular arch on the clinical design of "All-on-4" distal oblique implant by measuring and analyzing the conical bundle CT (conebeam computed tomography-CBCT images of patients with edentulous mandible, measuring the A-P distance (anterior-posterior distance), classification of maxillary arch) that may be implanted into implants, and exploring the effect of maxillary arch shape on the clinical design of "All-on-4" distal oblique implants. Methods: CBCT images of 74 patients with edentulous mandible were collected, including 35 males and 39 females. "All-on-4" implant fixed denture was performed. The A-P distance of the implants was measured on the plane through the mental foramen and parallel to the occlusal plane, the shape of the maxillary arch was classified, and the arc of the mandibular arch was measured from the mental foramen to the proximal side of the mandible to 7.5 mm. To explore the correlation between A-P distance and the radians. Results the A-P distance of implantable intermental region implants was measured in 74 patients (8.5 鹵1.5) mm (, 4.5mm, max 11.8 mm), 12.2%) (M 3, F 6), mandibular arch was 7 mm round, and 鈮，
本文編號(hào)：2146541
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