共查询到19条相似文献,搜索用时 68 毫秒
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石倚天 《口腔材料器械杂志》2011,20(4):208-211
充足的牙槽骨宽高度和骨质量是种植体植入的前提条件。但拔牙后局部牙槽骨的改建和吸收极易造成骨量和骨质减少,影响种植体植入。牙槽嵴保存技术有利于拔牙后牙槽骨的愈合,减少骨吸收,为后期种植修复创造条件。本文将对近年来牙槽嵴保存的方法、疗效及后期种植体植入效果做一综述。 相似文献
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何建明 《现代口腔医学杂志》2001,15(2):159-159
作者自 1995年对前牙牙槽嵴萎缩患者 ,通过种植前羟基磷灰石重建牙槽嵴后再种植 ,效果满意 ,报道如下。 一、材料和方法1.材料 :选用四川大学生物材料研究所生产的颗粒型致密多晶羟基磷灰石 (HA )及羟基磷灰石涂层钛种植体(HACI)。一般齿槽外科器械 ,法国进口种植机及配套钻具。2 .病例选择 :46例 6 3颗前牙 ,其中男 2 6例 ,女 2 0例 ;上前牙 44颗 ,下前牙 19颗。所有病例均常规取模 ,测量牙合龈、近远中及颊舌向距离 ,常规摄牙片 ,并在模型上试排牙 ,了解要取得前牙理想修复效果牙槽嵴应具备的条件。 6 3颗前牙均有中度萎缩 ,参照… 相似文献
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目的:观测牙槽突骨挤压扩张同期种植的方法处理骨宽度不足病例的近期临床效果。方法:对56名牙槽突颊舌向骨宽度不足的患者行牙槽突骨挤压扩张同期种植的方法,植入ITI种植体61颗。术后3个月行上部冠修复。在术后即刻,术后3个月,6个月,12个月行临床检查和X线检查,观测种植体临床存活率和种植体颈部边缘骨的变化。结果:使用该方法的种植体存留率为100%,经X线检查种植体颈部边缘骨水平无明显吸收。结论:运用牙槽突骨挤压扩张同期种植的方法处理牙槽突颊舌向骨宽度不足的病例,操作简单,手术创伤小,近期可以取得较理想的临床效果,远期效果有待进一步观测。 相似文献
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目的:探讨牙槽嵴保存术对不同牙槽嵴骨缺损患者延迟种植效果的影响。方法:94例行下颌单颗后牙拔除术患者,根据牙拔除术前牙槽嵴骨缺损量不同将患者分为轻度组(n=53)和中重度组(n=41),行拔牙术后再将轻度组和中重度组分别随机分为保存术组和对照组,保存术组对牙槽窝采取牙槽嵴保存术,对照组对牙槽窝不做处理。结果:轻度组和中重度组患者术后6个月保存术组患者宽度减少量和高度减少量均小于对照组(P<0.05);轻度组和中重度组中保存术组和对照组患者术后6月时GRL较拔牙前增加,而PD和AL则较拔牙前减少;轻度组种植体直径4.1 mm和4.8 mm分别占26.4%和73.6%,而中重度组则分别为46.3%和53.7%,两组相比差异具有统计学意义(χ2=4.029,P=0.045);轻度组种植体长度分布与中重度组相比差异具有统计学意义(χ2=21.207,P=0.000)。结论:牙槽嵴保存术可有效减少拔牙术后植骨区牙槽嵴骨量损失,有利于延迟种植操作的开展,尤其对患牙拔除前牙槽嵴骨缺损量>5 mm的患者,效果尤为显著。 相似文献
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目的:本研究将早期种植技术应用于种植临床,评价其成功率和疗效。方法:针对2009年3月以来拔牙4-6周后(但不足3个月)前来就诊的患者,我们为其常规植入种植体,最终完成种植义齿修复,通过定期随访、口腔内软硬组织检查、咬合检查、X线检查等评价种植义齿的修复效果及成功率。结果:采用早期种植技术修复的33个病例,明显缩短了种植修复的疗程,降低了治疗费用,提高了患者满意率,均取得了良好的临床修复效果。讨论:对于拟行种植修复者,传统方法是拔牙后3个月、拔牙窝愈合后再行种植。然而,拔牙后可导致牙槽骨的迅速吸收,导致种植区域骨量不足。本研究所应用的早期种植技术,既使得拔牙窝局部炎症得以恢复,软组织创口关闭,又避免了拔牙窝周围骨质的过多丧失,明显缩短了疗程。结论:在掌握好适应症的前提下,早期种植可以达到良好的修复效果,可以在种植临床推广应用。 相似文献
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前牙美学区牙齿缺失往往会影响患者的发音、咀嚼及美观,甚至会导致患者产生负面的心理情绪。近年来随着种植技术的发展,种植医生在保证种植修复高成功率的同时,更加注重如何采取快速、微创的治疗方法,尽早恢复缺牙区的功能与美观。尤其在前牙美学区,软硬组织轮廓的恢复是影响美学效果的关键因素,种植时机的选择对能否获得良好的软硬组织轮廓至关重要。国内外学者针对种植体植入时机报道了多项研究结果,但观点不一,文章就前牙美学区种植时机的选择做一阐述。 相似文献
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种植修复已被广泛应用于牙列缺损或缺失的功能重建。罹患重度牙周病变需要拔除的牙齿常存在广泛的牙槽骨吸收破坏。其中下颌第二前磨牙根尖毗邻颏孔区,由于其位置特点使得该处根尖区炎症进展易波及下颌管,一旦保留无望的牙拔除后,其种植修复治疗亦存在较大难度与风险。在拔牙同期应用牙槽嵴保存术可恢复和维持良好的牙槽嵴软硬组织轮廓,为种植治疗提供有利条件。文章完整展示了1例下颌第二前磨牙拔除同期行微翻瓣牙槽嵴保存术,术后进行种植修复及2年随访观察的全过程,为存在严重牙槽骨破坏的下颌第二前磨牙的治疗方案设计与临床处置提供了一定参考。 相似文献
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罹患重度牙周炎的患牙常伴有严重的感染和牙槽骨破坏,而且拔牙后牙槽窝在愈合过程中进一步骨吸收和改建,增加了后期以修复为导向的种植治疗难度。在上颌磨牙区因毗邻上颌窦,种植治疗常需要进行上颌窦提升术来弥补垂直骨量不足。文章展示了1例罹患重度牙周炎的上颌磨牙,通过微创拔牙后彻底清除牙槽窝感染,结合微翻瓣牙槽嵴保存术,有效减少牙槽窝愈合过程中的骨吸收,实现牙槽嵴的保存和重建,为后期种植修复提供了良好的硬组织三维条件。这一方法将上颌磨牙区骨增量术前移,简化了后续种植治疗的复杂性,值得临床推广应用。 相似文献
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目的 评价牙槽嵴扩张技术在上颌牙种植中的应用效果。方法 对49例牙槽嵴骨量不足的上颌牙种植采用骨扩张器Condenser进行牙槽嵴扩张。根椐不同的缺牙位置,植入与天然牙根直径相当的种植体,以满足患者功能与美学的需要。结果 在49例患者牙槽嵴骨量不足的缺牙区,植入了86枚种植体。术前患者上颌前牙区牙槽嵴宽度平均为3~5·1 mm,术后牙槽嵴宽度平均增加3·3~5·4 mm;术前上颌后牙区,牙槽骨高度平均为6~ 10 mm,术后牙槽骨高度平均增加2~7 mm;种植体均获得初始稳定性;术后6月,X线片显示种植体与牙槽骨形成了紧密的骨性结合骨,种植体植入6个月后进行2期修复。结论 ERE技术适用于上颌牙槽骨扩张,可达到功能与美学的要求,方法简单,值得临床推广。 相似文献
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Georgios A. Kotsakis DMD MS Thomas T. Nguyen DMD MSc Konstantinos Siormpas DDS Michael A. Pikos DDS Snjezana Pohl Dr. med. Dr. med. dent. PhD Dennis Tarnow DDS Miltiadis Mitsias DDS MSc PhD Root Membrane Group 《Clinical implant dentistry and related research》2023,25(1):23-34
The cover image is based on the Original Article Clinical outcomes of retention of the buccal root section combined with immediate implant placement: A systematic review of longitudinal studies by Georgios A. Kotsakis DMD, MS et al., https://doi.org/10.1111/cid.13150 .
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Objectives: The aim of this study was to compare crown and soft tissue dimensions of single-tooth implant restorations following early implant placement and guided bone regeneration (GBR) with contralateral non-restored teeth.
Material and methods: Twenty-seven patients treated by one and the same surgeon and prosthodontist to restore a single-tooth gap with a class I bone defect in the premaxilla by means of an implant-supported restoration were reviewed. Patients were examined at least 6 months following placement of the crown. All implants had been inserted 6–8 weeks following tooth extraction in conjunction with GBR. At evaluation, crown dimensions, soft tissue dimensions, clinical conditions and patients' aesthetic satisfaction were assessed by one clinician who had not been involved in the treatment.
Results: Implant-supported crowns were not significantly longer than contralateral teeth and midfacial soft tissues showed comparable levels after on average 21 months of function. Our data also indicated significant papilla loss especially at the distal aspect of the implants. As the patient's aesthetic appreciation was favourable in 88% of the cases, this appeared to be of trivial importance.
Conclusions: Favourable aesthetics may be achieved for single-tooth implant restorations following early implant placement and GBR. The impact of the latter on papilla levels, however, remains to be determined in longitudinal studies. 相似文献
Material and methods: Twenty-seven patients treated by one and the same surgeon and prosthodontist to restore a single-tooth gap with a class I bone defect in the premaxilla by means of an implant-supported restoration were reviewed. Patients were examined at least 6 months following placement of the crown. All implants had been inserted 6–8 weeks following tooth extraction in conjunction with GBR. At evaluation, crown dimensions, soft tissue dimensions, clinical conditions and patients' aesthetic satisfaction were assessed by one clinician who had not been involved in the treatment.
Results: Implant-supported crowns were not significantly longer than contralateral teeth and midfacial soft tissues showed comparable levels after on average 21 months of function. Our data also indicated significant papilla loss especially at the distal aspect of the implants. As the patient's aesthetic appreciation was favourable in 88% of the cases, this appeared to be of trivial importance.
Conclusions: Favourable aesthetics may be achieved for single-tooth implant restorations following early implant placement and GBR. The impact of the latter on papilla levels, however, remains to be determined in longitudinal studies. 相似文献