Sudden sensorineural hearing loss(SSHL) following a local anesthetic dental procedure

Acute sensorineural hearing loss is an uncommon phenomenon in dentistry.We describe the case of a 79-year-old male who presented with acute sensorineural hearing loss occurring 2 days after a tooth extraction procedure under local anesthesia.Possible mechanisms are discussed.He was treated with vasodilators(Ginaton and Alprostadil Injection)and Mecobalamin injection with benefit.High dose oral steroids(1 mg/kg)and low molecular weight dextran were used.

Clinical and Radiographic Evaluation of Marginal Bone Loss and Periodontal Parameters after Various Dental Reconstruction Procedures

Background: Periodontal disease is a bacterial infection that causes bone resorption of bone supporting teeth and leads to change in the normal architecture of the alveolar process. There are instances where the technique sensitive nature of restorative procedures or the faulty restorative margins may inadvertently lead to conditions which could bring about periodontal disease/ destruction. Therefore, this study was designed to determine the impact of dental restorations type on marginal bone among some patients being treated for chronic periodontitis. Material and Methods: Three hundred patients from the periodontics clinics in college of dentistry, King Khalid university were participated in our study. A total of 292 patients completed the study, 152 males and 140 female. They were divided according to dental reconstructions into three groups: Group I was without dental reconstructions (control group), group II patients received amalgam class II fillings and group III received fixed bridge denture. Plaque index (PLI) gingival index (GI), clinical attachment loss (CAL) and marginal bone loss (MBL) were recorded. All data were collected and were analyzed by ANOVA test. Results: In the present study, the restored teeth revealed significantly higher mean values for PLI, GI, CAL and MBL than the non-restored teeth (p-value Conclusion: Although the limitations of the present study, the patients in group II had the highest clinical attachment loss and value of marginal bone loss which can explain the more extension of amalgam fillings into subgingival direction, leading to increased plaque accumulation and increased periodontal destruction.

骨质疏松症患者口腔种植治疗的风险与对策

骨质疏松症是一种全身性骨骼疾病,以骨密度降低及骨量减少为主要特征。随着我国人口老龄化程度加剧,骨质疏松的发病率也逐年上升。作为牙缺失的首选治疗方法,种植牙具有很高的留存率,但对于骨质疏松患者,骨组织微结构的损坏可能会导致口腔种植治疗失败的风险增高。虽然骨质疏松不是口腔种植治疗的禁忌证,但是临床医生仍应高度重视相关风险因素。本文对骨质疏松患者的牙槽骨塑形及改建、种植牙留存率、抗骨质疏松药物的影响以及牙种植治疗策略这几方面进行探讨,以供临床参考。

种植修复10分钟及1个月后基台中央螺丝扭矩丧失情况的横断面研究

目的:本横断面研究采用4种不同的种植系统修复单颗前磨牙或磨牙缺失,观察种植修复体戴入,基台中央螺丝初次旋紧后的10 min及1个月,基台中央螺丝扭矩丧失的情况。方法:2021年7月~2023年6月于北京大学深圳医院口腔医学中心种植科完成单颗后牙种植体植入术后3个月,转修复科修复的患者268例,戴入了在二氧化锆全冠中央开孔并与基台口外粘接的改良粘接固位种植修复体。修复体调整至合适后,按照各厂家要求的扭矩旋紧基台中央螺丝。分别观察基台中央螺丝初次旋紧10 min及1个月后,当扭矩扳手再次旋紧基台中央螺丝至厂家要求的扭矩时,扭矩扳手自旋转起点至终点顺时针旋转的角度。旋转的角度越大,说明基台中央螺丝扭矩丧失的情况越严重。结果:基台中央螺丝初次旋紧10 min后再次旋紧时,所有实验组病例扭矩扳手旋转的角度均为0°。基台中央螺丝初次旋紧1个月后再次旋紧时,无论实验组(基台中央螺丝初次旋紧10 min后曾再次旋紧)还是对照组(基台中央螺丝初次旋紧10 min后未再次旋紧),无论前磨牙组还是磨牙组,无论种植体是Ankylos、Straumann、Zimmer或Nobel,所有病例扭矩扳手旋转角度均>0°。其中,共有29例病例(10.82%)扭矩扳手旋转的角度>90°,且这一比例在各组间没有显著差异(P>0.05)。没有病例扭矩扳手旋转的角度达到或超过180°。结论:在部分种植系统中,单颗后牙种植修复后1个月,部分病例基台中央螺丝扭矩丧失的情况较为明显,且比例与是否曾在基台中央螺丝初次旋紧10 min后再次加力,及前磨牙或磨牙位点、采用何种植系统无关。

老年口腔种植患者龈下菌群变化及其与种植体松动、脱落的关系研究

目的探讨老年口腔种植患者龈下菌群变化及其与种植体松动、脱落的关系。方法前瞻性选取2022年1月至2023年8月郑州大学第一附属医院收治105例老年口腔种植患者作为研究对象,根据口腔种植6个月后是否伴随种植体松动、脱落情况分组,其中松脱组31例,未松脱组74例。比较两组患者种植前、种植1个月后、种植2个月后的中间普氏菌(P.i)、福赛坦菌(T.f)、牙龈卟啉单胞菌(P.g)、伴放线放线杆菌(A.a)、口腔链球菌和口腔乳杆菌等后龈下菌群以及改良菌斑指数(MPLI)、探诊深度(PD)和改良龈沟出血指数(MSBI)等牙周临床指标水平,采用Pearson相关系数分析龈下菌群水平与牙周临床指标的相关性,Spearman相关系数分析龈下菌群水平与种植体松动、脱落的相关性,采用Logistic回归分析种植体松动、脱落的影响因素,采用受试者工作特征曲线(ROC)分析龈下菌群水平对种植体松动、脱落的预测价值。结果种植前、种植1个月后、种植2个月后,两组患者的P.i、T.f、P.g、A.a、口腔链球菌水平呈升高趋势,口腔乳杆菌水平呈下降趋势,且种植1个月和2个月后,松脱组患者的P.i、T.f、P.g、A.a、口腔链球菌、MPLI、PD、MSBI水平明显高于未松脱组,口腔乳杆菌水平低于未松脱组,差异均有统计学意义(P<0.05);Pearson相关系数分析显示,种植1个月后、2个月后P.i、T.f、P.g、A.a、口腔链球菌与MPLI、PD、MSBI均呈正相关,口腔乳杆菌与之均呈负相关。Spearman相关系数分析显示,种植1个月后、2个月后P.i、T.f、P.g、A.a、口腔链球菌与种植体松动、脱落呈正相关,口腔乳杆菌与之呈负相关(P<0.05);Logistic回归分析结果显示,P.i、T.f、P.g、A.a、口腔链球菌、口腔乳杆菌、MPLI、PD、MSBI均是老年口腔种植患者种植体松动、脱落的独立影响因素(P<0.05),校正相关因素后,P.i、T.f、P.g、A.a、口腔链球菌、口腔乳杆菌仍是其独立影响因素(P<0.05);ROC曲线分析结果显示,种植1个月后P.i、T.f、P.g、A.a、口腔链球菌、口腔乳杆菌联合预测老年口腔种植患者种植体松动、脱落的曲线下面积(AUC)为0.933(95%CI:0.867~0.972),优于各菌种单独预测价值(P<0.05)。结论龈下菌群变化与老年口腔种植患者种植体松动、脱落独立相关,联合检测对种植体松动、脱落具有较高预测价值,可作为临床预测种植体松动、脱落的新方案,并对临床干预具有一定指导价值。

牙种植同步植入Bio-Oss骨粉对牙槽骨骨量缺失患者临床效果的观察

目的探讨牙槽骨骨量缺失患者牙种植体植入时同步植入Bio-Oss骨粉的效果。方法采用回顾性分析2021年1月至2023年1月我院收治的牙槽骨骨量缺失患者104例,根据种植方式分为对照组和试验组,各52例。对照组实施单纯牙种植体植入,在缺失的牙槽骨内植入合适的螺纹植入物,试验组在此基础上同步植入Bio-Oss骨粉覆盖。参照中国卫生部制定的标准评价术后6个月疗效,并对比两组手术前后感觉神经动作电位(SNAP)测量结果、生活质量及术后各时期新生骨厚度、骨密度变化情况。结果试验组临床总有效率为98.08%(51/52),高于对照组的84.62%(44/52)(P<0.05);试验组术后6个月10 mV、50 mV、100 mV、1000 mV值均高于对照组(P<0.05);试验组术后6个月的生理功能、社会功能、情感职能、精神健康、活力评分均高于对照组(P<0.05);试验组术后1个月、3个月的新生骨厚度高于对照组,术后1个月、3个月、6个月的新生骨密度高于对照组(P<0.05)。结论牙槽骨骨量缺失患者牙种植体植入时同步植入Bio-Oss骨粉可提高临床疗效,改善神经功能及生活质量,促进新骨形成。

老年自体牙移植修复单个牙缺失预后的影响因素分析

目的:探讨老年自体牙移植修复单个牙缺失预后的影响因素。方法:分析我院接受自体牙移植修复的老年单个牙缺失患者62例,随访观察24个月,以存留率评估预后,根据患者末次复诊时存留在口腔内的移植牙占总移植牙数目的比例分为存留组和失败组。对比两组相关资料,采用单因素和多因素Logistic回归分析老年自体牙移植修复预后的影响因素。结果:62例老年自体牙移植修复患者中,24个月累计存留43例,存留率为69.35%,归为存留组,其余19例(30.65%)为失败组。单因素分析显示,失败组和存留组年龄、吸烟、受区牙槽骨高度、供体离体时间对比有差异(P<0.05);单因素和多因素Logistic回归显示吸烟(OR=3.772,95%CI=1.250~11.378)、牙槽骨高度不足(OR=11.254,95%CI=1.236~102.466)、供牙离体时间长(OR=1.760,95%CI=1.170~2.647)为老年单个牙缺失自体牙移植修复术后移植牙失败的危险因素(P<0.05)。结论:在老年单个牙缺失自体牙移植修复患者中,吸烟情况、受区牙槽骨高度、供牙离体时间是预后的影响因素,术前严格选择适应证,减少供牙离体时间,有助于提升老年自体牙移植修复移植牙的存留率,获得相对良好的预后。

人工种植牙邻接触丧失应对策略的专家共识

人工种植牙邻接触丧失(proximal contact loss,PCL)所引发的问题是近年研究热点,学者们一致致力于其原因和相关因素分析,旨在寻求解决与PCL相关问题的方案。前驱力作用、颌骨及牙槽窝等终身改建以及种植牙的骨整合特性是PCL的主要原因。一方面,下颌的闭口运动通过后牙牙尖产生了将牙齿往近中移位的前驱力,使上下颌后牙、下颌前牙近中漂移,同时,可使上下颌前牙唇向移位;另一方面,颌骨、牙槽窝、牙根的改建以及咀嚼肌的前向水平分力、下颌向前向上的动力分量以及牙尖斜面产生的向前分力使天然牙向近中漂移;此外,天然牙终身具备水平、垂直向移位以及旋转的能力,以适应口颌系统的改建和维持口腔的功能,而种植牙骨整合缺乏天然的牙周膜,缺乏近中漂移生理基础,垂直向平均动度微小,种植牙骨整合沉默性不具备天然牙整体漂移特点,增加了PCL发生的可能性。PCL高发生率与戴牙时间和近中位置有明显相关性,但也受咬合力大小、对颌牙状况、邻牙情况、修复方式、牙位、上下颌骨、年龄、性别等因素影响。PCL与食物嵌塞呈显著相关性,但并不一一对应,不满足充分必要条件。PCL也与种植体周病变以及龋齿等有关。PCL的预防包括知情同意、定期检查、固位方式选择、接触点增强、配戴保持器以及应用多用途数字化牙冠。PCL的处理包括邻接触点增补、正畸牵引以及咬合调整。现有方法可以短期解决食物嵌塞情况,综合干预以寻求稳定的远期效果。对称、平衡的考量将拓展处理有关PCL引发的问题。

同期永久基台用于单颗后牙种植修复35例短期疗效观察

目的:评价种植体植入同期采用一次性置入永久基台修复程序对种植体周软硬组织的影响。方法:收集35例单颗后牙缺失患者,采用一次性置入永久基台修复程序进行治疗。利用根尖片评估最终修复体戴入当天和随访1年时种植体周骨水平变化,使用标准牙周探针检测修复完成后即刻及1年后菌斑指数、探诊深度和龈沟出血指数。结果:修复后1年,种植体近中骨吸收量为(0.225±0.113)mm,远中骨吸收量为(0.439±0.123)mm;菌斑指数、探诊深度和龈沟出血指数均在正常范围内。结论:后牙区种植采用一次性置入永久基台修复程序,可较好保护种植体周软硬组织,是一种较理想的治疗方案。

种植牙修复中保留拔牙位点对患者修复后美观度及中远期骨缺失的影响

目的:探讨种植牙修复中保留拔牙位点对患者修复后美观度及中远期骨缺失的影响。方法:选取鹰潭市人民医院2021年1月—2022年3月收治的种植牙修复患者81例为研究对象。采用随机数字表法将其分为对照组(40例)和观察组(41例)。两组均采用微创拔牙,对照组采用常规种植牙修复,观察组采用保留拔牙位点的种植牙修复。比较两组拔牙前、拔牙6个月及12个月后牙槽骨骨密度、骨高度、骨宽度变化,比较两组美观度、满意度评分及种植成功率情况。结果:拔牙前,两组牙槽骨骨密度、骨高度、骨宽度组间比较,差异均无统计学意义(P>0.05);拔牙6、12个月后,两组牙槽骨骨密度、骨高度均低于拔牙前,骨宽度均小于拔牙前(P<0.05);但观察组拔牙6、12个月后牙槽骨骨密度、骨高度均高于对照组,骨宽度均大于对照组,差异均有统计学意义(P<0.05);两组拔牙前、拔牙6个月及12个月后牙槽骨骨密度、骨高度、骨宽度比较存在交互作用,差异均有统计学意义(P<0.001);观察组美观度与满意度评分均高于对照组,差异均有统计学意义(P<0.001);两组种植成功率比较,差异无统计学意义(P>0.05)。结论:种植牙修复中拔牙位点保留技术可减少患者骨吸收,保护牙槽骨骨密度、骨高度、骨宽度,提升拔牙修复后的美观度和满意度,值得临床推广和应用。

Marginal bone loss around non-submerged implants is associated with salivary microbiome during bone healing

Marginal bone loss during bone healing exists around non-submerged dental implants. The aim of this study was to identify the relationship between different degrees of marginal bone loss during bone healing and the salivary microbiome. One hundred patients were recruited, and marginal bone loss around their implants was measured using cone beam computed tomography during a 3-month healing period. The patients were divided into three groups according to the severity of marginal bone loss.Saliva samples were collected from all subjected and were analysed using 16 SMiSeq sequencing. Although the overall structure of the microbial community was not dramatically altered, the relative abundance of several taxonomic groups noticeably changed. The abundance of species in the phyla Spirochaeta and Synergistetes increased significantly as the bone loss became more severe. Species within the genus Treponema also exhibited increased abundance, whereas Veillonella, Haemophilus and Leptotrichia exhibited reduced abundances, in groups with more bone loss. Porphyromonasgingivalis, Treponemadenticola and Streptococcus intermedius were significantly more abundant in the moderate group and/or severe group. The severity of marginal bone loss around the non-submerged implant was associated with dissimilar taxonomic compositions. An increased severity of marginal bone loss was related to increased proportions of periodontal pathogenic species. These data suggest a potential role of microbes in the progression of marginal bone loss during bone healing.

Periodontal Health among Type 2 Diabetes Patients Treated with Different Dental Restorations

Background: Diabetes increases periodontal disease risk and its complications, which are worsened with age or faulty restorations. Aim: Evaluate periodontal health among patients with diabetes treated with different dental restorations. Materials and Methods: This comparative cross-sectional study was conducted at the faculty of dentistry, Najran University, KSA, from March 2018 to February 2020. It included 260 diabetics, treated with different dental restorations, divided into four groups, each comprising 65 patients aged 45 - 60 years: Group 1 (G1), no restorations (control group);Group 2 (G2), Class II amalgam restorations;Group 3 (G3), Class II composite resin restorations;and Group 4 (G4), three-unit posterior metal ceramic prostheses. The Ages of all restorations ranged from 8 to 10 years. All groups were assessed for the Plaque Index (PI) and Gingival Index (GI), Overhangs Rate (OR), Alveolar Bone Loss (ABL) (the latter two using panoramic X-ray). HbA1c and duration of participants were also assessed and compared. Results: The mean HbA1c results of the groups ranged from 8.1% to 9.5%, and their mean diabetes durations ranged from 7.2 to 12 years. All the groups showed worse periodontal scores, ranging from 2.45 - 2.95 for PI and 2.25 - 2.8 for GI. G2 had higher scores than G1 and G3 (p < 0.001). G4 had the highest two recorded scores (p < 0.001). G2 had a higher rate of overhangs than G3 (p < 0.037). The mean ABL was 44% (SD 6.4) for G1, 56.0% (SD 6.7) for G2, 46.5% (SD 5.8) for G3, and 74.5% (SD 6.4) for G4. The lowest values were recorded in G1 and G3 (p = 0.987). The highest value was observed in G4, which was significantly higher than other groups (p < 0.001). Conclusion: The worse periodontal parameters among subjects treated with either three-unit metal ceramic or Class II amalgam restorations indicated severe periodontal destruction. Untreated subjects and subjects treated with Class II composite resin had relatively better periodontal status.

Comparison of Success Rate and Radiological Bone Loss in Patients with Mini-Implant versus Conventional-Sized Implant Removable Prostheses: A Meta-Analysis

Background: The objective of this meta-analysis was to assess whether mini-implants have added benefit in terms of implants success rate and average bone loss over conventional-sized implants after one year of follow-up. Methods: An electronic search of randomized clinical trials was conducted in MEDLINE (via PubMed), Cochrane Central Register of Clinical Trials (CENTRAL) and Web of Science for studies including complete or partial edentulous patients requiring two or four mini-implants or conventional/ standard-sized implants in the maxilla or mandible for implant-supported removable prostheses who completed 12 months of follow-up. Results: The search provided 194 unique articles which were screened for title and abstract. Screening generated 12 articles which went through full-text analysis using eligibility criteria, and 4 articles were included for meta-analysis. Meta-analysis of these studies indicated a non-significant difference in the success rate between the two interventions (OR = 1.69 [0.74, 3.85;p = 0.21]). Bone loss estimates resulted in a significant bone reduction (Mean Difference = -0.74 [-0.95, -0.53;p < 0.05]) in favor of two mini-implants when compared with two conventional-sized implants, but when compared four mini- with two conventional-sized implants, the estimates were non-significant (Mean Difference = -0.24 [-0.69, 0.20;p = 0.29]). Conclusion: The current evidence does not provide solid evidence of the benefits of one intervention over the other. More studies with follow-up times of 10 and more years are needed as current studies have described the short-term outcomes.

拔牙位点保存技术与常规种植牙对预防种植牙修复患者拔牙后骨缺失及减少牙槽骨吸收的效果对比

目的:分析比较拔牙位点保存技术与常规种植牙对预防种植牙修复患者拔牙后骨缺失及减少牙槽骨吸收的效果。方法:选择2018年6月至2022年6月在山东省临沂市中医医院口腔科进行种植牙修复的160例患者为研究对象,以随机数表法分为讨论组与常模组,每组各80例。给予常模组常规的种植牙修复,讨论组则在种植牙修复过程中应用拔牙位点保存技术。对比两组治疗前后的牙槽骨高度、宽度、骨密度、红色美学指数(PES)评分及治疗后的牙槽嵴唇腭(舌)向骨吸收量、垂直向骨吸收量。结果:治疗前,两组的牙槽骨高度、宽度、骨密度对比,差异无统计学意义(P>0.05)。随访6个月后,两组的牙槽骨高度、宽度、骨密度均低于治疗前,且讨论组的牙槽骨高度、宽度、骨密度均高于常模组,差异有统计学意义(P<0.05)。随访6个月后,讨论组的牙槽嵴唇腭(舌)向骨吸收量和垂直向骨吸收量均低于常模组,差异有统计学意义(P<0.05)。治疗前,两组的PES评分对比,差异无统计学意义(P>0.05)。随访6个月后,两组的PES评分均高于治疗前,且讨论组的PES评分高于常模组,差异有统计学意义(P<0.05)。结论:拔牙位点保存技术相较于常规种植牙对预防种植牙修复患者拔牙后骨缺失的效果较好,有助于减少牙槽骨吸收,提高牙齿的美观程度。

功能性吸附性义齿与传统性活动义齿修复牙列缺失的疗效比较

[目的]对比功能性吸附性义齿与传统性活动义齿修复牙列缺失的临床效果.[方法]2020年9月至2021年8月本院收治的86例牙列缺失行全口义齿修复患者,采用随机数字表法分为对照组(给予传统性活动义齿修复)和观察组(给予功能性吸附性义齿修复),每组43例.对比两组患者义齿固位和稳定性评分、咀嚼效率、舒适度、黏膜压痛点数及主观满意度.[结果]修复后,观察组上颌、下颌义齿固位和稳定性评分均高于对照组(P<0.05).修复前,两组患者咀嚼效率和舒适度比较,差异无统计学意义(P>0.05);修复后,观察组咀嚼效率和舒适度高于对照组(P<0.05).修复后3d、5d,观察组上颌、下颌黏膜压痛点数低于对照组(P<0.05);修复后3个月,观察组满意度高于对照组(P<0.05).[结论]与传统性活动义齿修复相比,功能性吸附性义齿修复可提高义齿固位和稳定性评分、咀嚼效率、舒适度,降低黏膜压痛点数,并可提高患者满意度.

牙齿缺失患者行即刻种植牙法与常规种植牙法治疗的临床观察

目的分析即刻种植牙法、常规种植牙法在牙齿缺失中的实际疗效。方法将新乡市第一人民医院2016年1月至2022年10月牙齿缺失患者(60例)作为研究对象,依据区间随机法将其分为对照组、研究组,各纳入30例,对照组行常规种植牙法治疗,研究组行即刻种植牙法。比较两组种植体稳定系数(ISQ)、治疗前后牙周相关指标[牙龈沟深度(SPD)、龈沟出血指数(SBI)、牙龈指数(GI)]变化情况、并发症发生情况及种植修复满意度。结果研究组治疗后第一月、第三月、第六月ISQ评分均与对照组相比较高,差异有统计学意义(P<0.05);治疗前组间各牙周指标对比,差异无统计学意义(P>0.05),治疗后两组SPD、SBI均明显降低,且研究组SPD、SBI低于对照组,差异有统计学意义(P<0.05);治疗后两组GI均明显升高,且研究组GI高于对照组,差异有统计学意义(P<0.05);研究组种植牙术后并发症发生率(3.33%)与对照组(20.00%)相比较低,差异有统计学意义(P<0.05);研究组种植修复满意度(96.67%)与对照组(76.67%)相比较高,差异有统计学意义(P<0.05)。结论对比常规种植牙法,即刻种植牙法在牙齿缺失中的疗效相对理想,在术后种植体稳定、牙周健康、并发症发生情况等方面均有所体现,值得应用。

种植牙技术修复牙列游离端缺失患者的效果观察

目的探究分析种植牙技术修复牙列游离端缺失患者的效果观察。方法选取我院2020年1月至2022年5月收治的牙列游离端缺失患者79例作为研究对象,随机分为两组,对照组39例为活动义齿修复,研究组40例为种植牙技术,分析两组患者修复效果,即咀嚼评分、牙槽骨骨吸收量评分、美观评分。结果研究组咀嚼评分、牙槽骨骨吸收量评分均较对照组更优,差异具有统计学意义(P<0.05);研究组美观评分高于对照组,差异显著(P<0.05)。结论通过对游离端缺失患者实施种植牙技术修复后效果可观,临床上值得应用。

3D打印数字化导板技术在下颌后牙区连续多牙种植中的修复效果及三维精度分析

目的探讨3D打印数字化导板技术对下颌后牙区连续多牙种植的修复效果及三维精度的影响。方法选取2019年5月—2021年6月因牙列缺损在赤峰市医院就诊的下颌后牙区连续多牙种植患者86例(共种植190颗),随机分实验组和对照组,每组43例。对照组采用传统种植导板,研究组采用3D打印数字化种植导板。比较两组种植体植入误差、牙周健康、种植体植入成功率、术后并发症及种植体满意情况。结果研究组术后种植体轴向、倾斜向的颈部、根尖、深度、角度误差均小于对照组(P<0.05)。研究组种植体植入12个月的牙龈沟出血指数(SBI)、探诊深度(PD)均低于对照组(P<0.05),两组种植体植入12个月的骨吸收量比较,差异无统计学意义(P>0.05)。两组种植体植入3个月、6个月的种植体成功率比较,差异均无统计学意义(P>0.05),研究组种植体植入12个月的种植体成功率高于对照组(P<0.05)。两组术后总并发症发生率、种植体满意情况比较,差异均无统计学意义(P>0.05)。结论3D打印数字化导板技术用于下颌后牙区连续多牙种植修复可提高种植体植入三维位置精确度,有利于改善种植体牙周健康状况。

自体骨混合Bio-oss骨粉在牙种植骨量不足牙缺失患者中的应用效果

目的探讨自体骨混合Bio-oss骨粉在牙种植骨量不足牙缺失患者中的应用效果。方法选取2019年4月至2021年4月收治的46例牙种植骨量不足牙缺失患者为研究对象,按照随机数字表法将其分为对照组(23例,自体骨)与观察组(23例,自体骨混合Bio-oss骨粉)。比较两组的修复效果。结果两组的种植成功率均为100%。修复后6、12个月,观察组的牙槽嵴高度、唇侧骨量及骨厚度高于对照组(P<0.05)。修复后6、12个月,观察组的骨密度及种植体稳定值(ISQ)均高于对照组(P<0.05)。修复后12个月,观察组的红色美学指数(PES)及白色美学指数(WES)评分均高于对照组(P<0.05)。修复后12个月,观察组的牙龈指数(GI)、菌斑指数(PLI)及龈沟出血指数(SBI)低于对照组(P<0.05)。两组的并发症总发生率无明显差异(P>0.05)。结论自体骨混合Bio-oss骨粉在牙种植骨量不足牙缺失患者中的应用效果显著,能降低骨吸收率,促进骨生长,提高口腔美学效果,改善牙周情况。

即刻种植牙法治疗牙齿缺失的临床效果

目的:探讨即刻种植牙法治疗牙齿缺失的临床效果。方法:选取2019年1月—2021年12月德州市夏津县人民医院牙科收治的牙齿缺失患者80例作为研究对象,以随机数字表法分为对照组与观察组,各40例。对照组实施常规延迟种植牙法治疗,观察组实施即刻种植牙法治疗。比较两组种植效果、稳定性、美观性、并发症发生情况。结果:观察组种植成功率高于对照组,差异有统计学意义(P=0.043)。治疗后1、6个月,观察组种植体稳定值评分、红色美学评分高于对照组,差异有统计学意义(P<0.001)。观察组并发症总发生率低于对照组,差异有统计学意义(P=0.048)。结论:即刻种植牙法治疗牙齿缺失的临床效果理想,能够提高种植成功率,以及种植体稳定性与美观性,降低并发症发生率。