共查询到19条相似文献,搜索用时 46 毫秒
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目的:对3D打印种植导板和传统种植导板在多牙缺失种植中的效果进行观察,并评价患者的满意度.方法:30例(83颗牙)缺牙需种植的患者,用随机数字表法分为传统种植导板组(CIT组,15例,42颗牙)和3D打印种植导板组(TDPIT组,15例,41颗牙),CIT组患者采用传统种植导板,TDPIT组患者采用3D打印种植导板,比较2组患者植入种植体的颈部和尖部偏离值、种植体角度偏离值及角度满意度,术后1年牙周袋探诊深度、骨吸收情况及种植成功率.通过满意度问卷调查,比较2组患者对牙种植效果的满意度.采用SPSS19.0软件包对数据进行统计学分析.结果:TDPIT组种植体颈部和尖部在近远中向、颊舌向和垂直向3个方向的偏离值以及在近远中向和颊舌向2个方向的平均角度偏离值均显著小于CIT组(P<0.05),且TDPIT组种植体在近远中向和颊舌向2个方向的角度满意度显著高于CIT组(P<0.05).2组患者术后1年种植体牙周袋探诊深度及骨吸收情况无显著差异(t=1.144,P=0.256;t=1.063,P=0.291).2组患者术后3个月和6个月种植成功率无显著差异(P>0.05),但术后随访9个月和1年,TDPIT组种植成功率显著高于CIT组(90.48%:100%,x2=4.102,P=0.043).满意度问卷调查显示,TDPIT组患者对种植的满意度显著高于CIT组(86.67%:53.33%,x2=3.968,P=0.046).结论:3D打印种植导板植入的种植体精度、种植成功率和患者满意度优于传统种植导板,适合推广应用. 相似文献
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口腔种植是修复无牙颌功能的重要手段。该术式技术难度高,需要医生详细规划种植修复方案,并精准植入种植体,才能达到良好的修复效果。数字化导板可提高种植体植入精度,减少手术并发症,因此在无牙颌种植中应用广泛。由于多数无牙颌种植修复患者的术前咬合关系紊乱、颌骨形态不规则,严重影响了数字化导板的准确就位与应用精度。文章针对无牙颌种植导板的个性化设计和改良做一介绍,期望提高其临床应用效果。 相似文献
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目的 比较3D打印种植导板引导前牙牙种植在不同术式下的精度。方法 选择21例(32个牙位)牙缺失患者,制作仿真翻瓣与不翻瓣颌骨模型,分为翻瓣组(FP组)与不翻瓣组(FPS组),分别设计制作牙种植导板,比较两组牙种植体实际位置与术前规划在顶端、底端、垂直向距离的偏差值和角度偏差值。采用SPSS 19.0软件对数据进行统计学分析。结果 FPS组与FP组种植体顶端、底端、垂直向距离偏差值和角度偏差值的差异均有统计学意义(P<0.05);与FPS组相比,FP组偏差值更小,精度更高。结论 3D打印种植导板可提高牙种植的精确性,翻瓣与不翻瓣的不同术式对牙种植精度有一定的影响,临床医生可根据实际情况合理选择术式。 相似文献
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目的 比较3D打印种植导板引导前牙牙种植在不同术式下的精度。方法 选择21例(32个牙位)牙缺失患者,制作仿真翻瓣与不翻瓣颌骨模型,分为翻瓣组(FP组)与不翻瓣组(FPS组),分别设计制作牙种植导板,比较两组牙种植体实际位置与术前规划在顶端、底端、垂直向距离的偏差值和角度偏差值。采用SPSS 19.0软件对数据进行统计学分析。结果 FPS组与FP组种植体顶端、底端、垂直向距离偏差值和角度偏差值的差异均有统计学意义(P<0.05);与FPS组相比,FP组偏差值更小,精度更高。结论 3D打印种植导板可提高牙种植的精确性,翻瓣与不翻瓣的不同术式对牙种植精度有一定的影响,临床医生可根据实际情况合理选择术式。 相似文献
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当临床中既要进行缺失牙的种植,又要进行余留牙的牙体预备时,利用数字技术将二者进行同期整合是一个减少就诊次数、提升效率的方案。本文提出了一种同期种植与牙体预备技术的数字化流程,将种植手术导板和三维打印定深孔导板同期整合为一个导板,同时完成引导种植体植入与精准牙体预备。以“修复为导向”的虚拟种植规划设计并制作出的种植手术导板,可以提高种植体植入的效率和可预测性,其线性精度要求为1 mm左右;而定深孔导板实现了牙体预备量的精准引导、修复空间可视化,保证了备牙质量,其线性精度要求为百微米级。不同的设计精度需求使得二者的结合提升导板整体的引导精度需求,二者的一体化同期应用也实现了最大程度减少临床操作时间、就诊次数以及患者经济负担的要求。 相似文献
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目的 本项研究旨在探索榫卯连接式全程数字化组合导板在全口种植外科手术中应用的临床效果.方法 本项研究选取一位由于重度牙周炎导致全口上下颌牙槽骨吸收至根尖1/3,全口上下颌牙齿松动III度,要求全口种植修复的患者为研究对象.运用一项自主设计研发的榫卯连接式全程数字化组合导板,该导板利用榫卯式的连接,将定位导板、截骨导板、... 相似文献
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目的:研究过预备法对上颌前牙区即刻种植精度的影响。方法:选择40例上颌前牙区接受即刻种植治疗的患者纳入试验。试验组(n=20)在全程种植导板的引导下进行种植外科手术,并联合使用过预备法对拔牙窝腭侧骨壁进行修整;对照组(n=20)仅在全程种植导板的引导下进行种植外科手术。术中记录各组种植体的初期稳定性及三维位置,术后比较各组种植体实际三维位置与术前规划间的差异。结果:试验组种植体的颈部偏差为(0.48±0.25) mm、根尖部偏差为(1.05±0.54) mm、角度偏差为(2.09±0.70)°;对照组种植体颈部偏差为(0.68±0.28) mm、根尖偏部差为(2.48±0.50) mm,角度偏差为(4.35±1.19)°。两组种植体的颈部偏差、根尖部偏差、角度偏差间差异均具有统计学意义(P<0.05),两组种植体的初期稳定性间差异不具有统计学意义(P>0.05)。结论:过预备法能够减小拔牙窝腭侧骨壁对于种植体三维位置的影响,提高上颌前牙区即刻种植的精确度。 相似文献
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正确的植入位点对于种植修复的长期稳定有效十分重要,为提高植入的精准度,临床上越来越多地使用外科导板、手术导航等来控制位点,引导种植体的植入。但是一方面由于这类数字化手段存在过程繁琐、费用较高等问题,大量的病例仍然是由自由手植入的;另一方面,在术前、术中、术后缺乏快速实用的实测位点的方法,不少病例只有术后锥形束CT检查时才发现位点不良,改正位点的代价不小。本文介绍一种适用于各类种植系统的全程植入位点的实测方法及其引导的精准植入技术。本技术由实测尺子引导,包括测量尺和术中定位尺两部分。术前使用测量尺测量术区三维空间,根据实测数据结合锥形束CT数据进行种植方案和数量引导设计,术中用实测尺子引导全程种植,兼顾实测核查。这种方法实现了植入手术从术前空间分析、术中精准植入引导及术后位点实测评价的全程可量化,可全程及时调整位点,提高了植入精度,是一项适宜推广的牙种植实用技术。 相似文献
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牙支持式先锋钻种植手术导板指引下种植体植入偏离情况 总被引:1,自引:0,他引:1
目的:研究先锋钻种植手术导板指引下种植体植入时的偏差情况。方法:采用CBCT对25例患者,已完成导板进行扫描并导出三维数字模型的38颗种植体,在mimics软件中将导板三维模型与患者种植术后锥形束投照计算机重组断层影像设备(CBCT)数据进行配准。然后测量种植体中心线在计划与实际种植体肩端水平和根端水平的垂直距离中心线及最大交角。结果:所有病例均顺利完成手术和临床修复。修复完成时间4-18个月,无种植体松动、脱落。植入的种植体与种植导板导引指定位置的肩端偏差0.83±0.49mm;根端偏差1.51±1.26mm;轴向偏离5.90±3.84度。结论:导板可保证预定植入方案的顺利进行,种植体实际位置与预定位置之间有轻微偏差,但影响轻微。 相似文献
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Kyung Chul Oh Ji-Man Park June-Sung Shim Jee-Hwan Kim Jong-Eun Kim Jang-Hyun Kim 《Dental materials》2019,35(3):468-476
Objectives
The aim of the present study was to investigate the adaptation and guide hole tolerance of metal sleeve-free computer-assisted implant surgical guides fabricated with 3D printers.Methods
An implant surgical guide for full-guided implant placement was designed with a total of eight different guide holes. Ten implant surgical guides (n = 10) were fabricated from the same design with each of five in-office 3D printers (D1, FOR, ONE, PER, and ZEN) using compatible printing materials. Ten surgical guides fabricated by the manufacturer of the implant company were used as the control group (CON). The adaptation of the surgical guides was evaluated by the replica technique. The tolerance of the guide holes was evaluated by measuring the degree of diversion with guide drills.Results
CON and D1 showed superior internal adaptation with a gap distance of less than 1 mm. The mean degree of diversion of the guide holes ranged from 3.45° for ZEN to 6.55° for PER. The tolerances of CON (4.70°) and D1 (4.50°) did not differ at the level of statistical significance at α = 0.05.Significance
The characteristics of implant surgical guides were evaluated per se. None of the 3D printers fabricated superior implant surgical guides to those produced by the manufacturer with regard to the internal fit and guide tolerance. However, the potential for the routine clinical use of in-office 3D printers was demonstrated. Further studies are required to determine how the guide hole tolerance and the angular deviation between the preplanned and actual implant positions are related. 相似文献14.
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《Journal of cranio-maxillo-facial surgery》2022,50(2):114-123
The aim of this retrospective study was to evaluate the outcomes of simultaneous LeFort I osteotomy and zygomatic/dental implant placement for oral rehabilitation of patients with extremely atrophic/dysmorphic edentulous maxilla.Simultaneous LeFort I osteotomy and zygomatic/dental implant placement was performed with patient-specific anatomical models and surgical guides produced through three-dimensional virtual planning methods. All patients received their final prosthesis, with immediate loading, on the day after surgery. The primary outcome variables were the implant survival rate, and the incidence of intra/postoperative complications. In total, 15 zygomatic implants and 33 conventional dental implants were inserted in eight patients. The mean follow-up of the patients was 38.5 months. The implant survival rate was 93.3% for zygomatic implants and 100% for dental implants. No intra/postoperative complications were observed.Simultaneous LeFort I osteotomy associated with zygomatic/dental implant surgery can be considered as a valuable treatment option for rehabilitation of patients with extremely atrophic edentulous maxilla and esthetic issues of the face. 相似文献
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目的:评估上颌前牙区即刻种植即刻修复的临床应用效果,特别是美学效果,并探讨其临床应用技巧及美学影响因素。方法:选择16例共18颗无法保存的上前牙,微创拔除后即刻植入Xi ve或Repl ace种植体共18枚,均于48小时内完成临时固定修复,4~6个月后完成最终修复。种植永久修复后追踪观察12~36个月,观察种植体周围软硬组织情况,统计种植义齿存留率、牙龈乳头充盈指数以及修复体与相邻天然牙唇侧牙龈的协调性、患者主观满意度。结果:在观察期内18枚种植体均获得了良好的骨结合,种植体无松动,种植体周围未见病理性骨吸收,存留率为100%;18枚种植修复体周围共34个牙龈乳头充盈指数均为2到3度,其中24个(70.6%)为3度;15枚种植修复体唇侧龈缘位置与相邻天然牙协调无差异,3枚轻度差异;16枚种植修复体与相邻天然牙牙龈颜色质地协调无差异,2枚轻度差异。患者主观满意度VAS值平均达91.5。结论:在严格掌握适应证的前提下,应用正确的手术技巧对无法保存的上前牙进行微创拔除后即刻种植即刻修复能获得理想的临床效果,特别是美学效果。 相似文献
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目的 探讨CAD/CAM全程手术导板结合改良根盾技术在美学区即刻种植的临床效果,以期为CAD/CAM全程手术导板和改良根盾技术在临床应用提供借鉴.方法 对1例左侧上前牙外伤的病例进行即刻种植,应用改良根盾技术保存唇侧牙片,CAD/CAM全程手术导板引导种植体植入.结果 通过CAD/CAM全程手术导板引导即刻种植体植入和... 相似文献
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Iaki Gamborena Yoshihiro Sasaki Markus B. Blatz 《Journal of esthetic and restorative dentistry : official publication of the American Academy of Esthetic Dentistry ... [et al.]》2021,33(1):158-172
This article describes a comprehensive step‐by‐step protocol for immediate implant placement and restoration in the esthetic zone. Clinical Considerations Immediate implant placement into fresh extraction sockets and immediate restoration have become widely accepted, demonstrating long‐term success rates that are comparable with traditional delayed implant protocols. However, they are technique sensitive and require proper treatment planning as well as meticulous execution to be predictable and successful in the long term. This is particularly important in the esthetic zone, where even minor aberrations and mistakes can have devastating consequences, and especially in younger patients, where esthetic and functional outcomes should remain stable for years and possibly decades to come. The eight critical steps for predictable immediate implant placement include: provisional restoration of the failing tooth and presurgical phase, atraumatic tooth extraction, initial implant osteotomy, 3D bone graft packing, guided implant placement with a surgical guide, customized abutment insertion, provisional crown relining, and placement of a connective tissue graft from tuberosity. Immediate implant protocols in the esthetic zone require thorough planning and execution in the proper sequence. Each one of the critical steps discussed in this article has its own importance and challenges, which are critically assessed based on current scientific evidence. 相似文献