牙列重度磨损咬合重建修复治疗方法的探讨

目的 探讨牙列重度磨耗患者行固定义齿咬合重建修复的可行性.方法 结合1例牙列重度磨耗患者,咬合垫佩戴3个月后,制作过渡性修复体,口内观察1年,然后行上下颌固定义齿最终修复,经过这一序列诊疗过程完成咬合重建.结果 患者使用最终修复体2年,美观满意,咀嚼效率良好,无咀嚼系统肌肉及颞下颌关节不适症状.结论 牙列重度磨耗的固定义齿咬合重建修复是一个复杂的序列治疗过程,治疗效果是满意的.     

义齿式(牙合)板治疗颞下颌关节紊乱病伴牙列缺损磨损探讨

目的 探讨用义齿式牙合板治疗伴有牙列缺损和牙体磨损的颞下颌关节紊乱病的效果.方法 对15例由于牙列缺损、余牙严重磨损等原因导致颞下颌关节紊乱病患者,应用义齿式牙合板修复缺牙,以恢复正常息止颌间隙、改善咀嚼功能.结果 经1～8年临床追踪,12例患者颞下颌关节症状消失,3例患者颞下颌关节症状明显减轻,全部病例均恢复咀嚼功能,治疗和修复效果满意.结论 义齿式牙合板可有效地治疗伴有牙列缺损和牙体磨损的颞下颌关节紊乱病病例.     

义齿式板治疗颞下颌关节紊乱病伴牙列缺损磨损探讨

目的 探讨用义齿式牙合板治疗伴有牙列缺损和牙体磨损的颞下颌关节紊乱病的效果.方法 对15例由于牙列缺损、余牙严重磨损等原因导致颞下颌关节紊乱病患者,应用义齿式牙合板修复缺牙,以恢复正常息止颌间隙、改善咀嚼功能.结果 经1～8年临床追踪,12例患者颞下颌关节症状消失,3例患者颞下颌关节症状明显减轻,全部病例均恢复咀嚼功能,治疗和修复效果满意.结论 义齿式牙合板可有效地治疗伴有牙列缺损和牙体磨损的颞下颌关节紊乱病病例.     

牙列缺损伴重度磨耗的咬合重建及修复

目的探讨牙列缺损伴重度磨耗咬合重建及修复方法。方法本文重点介绍了牙列缺损并伴有严重磨耗,面下1/3高度变短的病例,采用固定义齿与简单或垫式通可摘局部义齿进行联合性修复,以获得永久性咬合重建治疗。结果对牙列缺损伴重度磨耗的病例,可通过暂时性修复进行过渡,固定义齿与简单或垫式可摘局部义齿进行联合性修复以达到满意的疗效。结论合理的咬合重建修复治疗可有效恢复患者正中颌位关系及正常的咀嚼功能、治疗及预防颞下颌关节疾病、改善美观。     

牙列重度磨耗伴缺损老年患者两种咬合重建治疗的效果比较

目的:观察牙列重度磨耗伴缺损的老年患者分别采用垫式可摘局部义齿与固定义齿进行咬合重建治疗的效果,并进行对比研究。方法:24例牙列重度磨耗伴缺损的老年男性患者,分别采用垫式可摘局部义齿与固定义齿进行咬合重建治疗,其中垫式可摘局部义齿咬合重建组15例,固定义齿咬合重建组9例,并分别对患者治疗前后的自我感觉(美观、舒适)、临床表现、咀嚼效率、颞下颌关节紊乱病临床症状的变化等指标进行评估及分析。结果:垫式可摘局部义齿与固定义齿咬合重建治疗后,患者均主观感觉良好、临床症状改善、咀嚼效率增加,差异显著(P<0.01)。固定义齿咬合重建组患者较垫式可摘局部义齿咬合重建组患者主观感觉更好,咀嚼效率增加更多(P<0.05)。有颞下颌关节病症状的患者咬合重建后症状均有改善,两种咬合重建方法间未见明显差异。结论:垫式可摘局部义齿与固定义齿咬合重建治疗均能一定程度恢复牙列重度磨耗伴缺损老年患者的口颌功能,改善颞下颌关节病症状。采用固定义齿进行咬合重建治疗更具有美观、舒适、提高咀嚼效率的作用。     

面磨损伴牙列缺损重建修复效果探讨

牙列缺损的患者常伴有余留牙牙合面的重度磨损 ,使得垂直距离变低 ,咀嚼效率下降 ,严重者可导致颞下颌关节功能紊乱。目前国内外学者对此类病例的病因、治疗等方面进行了很多研究[1] 。牙合重建被认为是一种有效的修复治疗方法 ,而颌位关系的确定是牙合重建修复的关键。笔者采取先行调位性咬合板治疗 ,再行牙合重建修复 ,收到很好疗效。一、资料和方法1.研究对象 :选择牙合面磨损严重同时伴有牙列缺损的患者 17例 ,其中男性 11例 ,女性 6例 ,平均年龄 4 6岁。2 .治疗前颞下颌关节症状检查 :17例患者中有咀嚼肌群疼痛、关节区疼痛和关节弹响…     

中重度牙列磨耗一次性咬合重建修复的疗效观察

目的探讨中、重度牙列磨耗患者一次性咬合重建的临床效果。方法中、重度牙列磨耗患者23例,行一次性固定或活动义齿修复,随访并询问患者的主观感受、咀嚼情况、颞下颌关节区变化,摄X线片,了解义齿、牙根及颞下颌关节结构改变。结果患者普遍认为一次性重建易适应、咀嚼效率显著提高,无颞下颌关节区不适等症状。复查X线片示无明显异常。结论中、重度牙列磨耗患者选择性实施一次性咬合重建的临床效果良好。     

牙列缺损伴重度(牙合)面磨损(牙合)重建修复的临床研究

目的 通过对不同类型牙列缺损并伴重度(牙合)面磨损的患者进行修复治疗,探讨(牙合)重建的有关问题.方法 选取牙列缺损并伴重度(牙合)面磨损患者69例,制取修复前研究模型,根据不同的缺损类型进行(牙合)垫式可摘局部义齿、固定义齿或固定-可摘义齿联合修复,随访3个月～4年,观察修复治疗效果.结果 患者的咀嚼功能明显改善,有颞下颌关节症状者,症状得到了缓解,无颞下颌关节症状者在咬合升高后未出现新的颞下颌关节症状.结论 对于牙列缺损伴重度(牙合)面磨损患者,(牙合)垫式可摘义齿及固定义齿修复均是(牙合)重建修复的有效方法.     

牙列重度磨耗应用固定修复咬合重建的临床观察

目的观察以固定义齿修复进行咬合重建在治疗牙列重度磨耗中的临床效果。方法选择35例牙列重度磨耗或伴有牙列缺损的患者,制作烤瓷或铸造固定义齿进行全牙列咬合重建修复。1年后比较修复前后美观效果、夜磨牙症状、颞下颌关节症状和咀嚼效率的变化。结果所有患者均获得了满意的美观效果,夜磨牙和关节症状有明显减轻或消失,同时显著提高了咀嚼效率。结论固定义齿修复是一种良好的、有效的咬合重建的方法。在保留息止颌间隙的前提下,临床义齿戴用3周后如无不适症状,可考虑行永久咬合重建。     

透明质酸钠关节腔注射联合牙合垫治疗不可复性关节盘前移位的疗效评价

目的:评价关节腔注射透明质酸钠联合稳定性牙合垫治疗颞下颌关节不可复性盘前移位的临床疗效。方法:将在郑州市口腔医院就诊的40例不可复性盘前移位的患者随机分为实验组和对照组,实验组采用关节上腔注射透明质酸钠联合稳定性牙合垫治疗,对照组采用单纯的关节上腔注射透明质酸钠治疗,对比分析两组患者在治疗前、治疗后、治疗后3个月、6个月时的Friction颞下颌关节紊乱指数、疼痛视觉模拟评分(VAS)和最大开口度。结果:两组患者治疗后开口度、疼痛程度及颞下颌关节紊乱症状及体征与术前比较均明显改善,差异均有统计学意义(P<0.05)。实验组与对照组患者治疗后同时点比较,张口度差异不明显(P>0.05)。实验组患者治疗后及治疗后3、6个月时VAS、颞下颌关节紊乱指数(craniomandibular index ,CMI)和颞下颌关节功能障碍指数(dysfunction index , DI)低于对照组,差异均有统计学意义(P<0.05)。结论:关节上腔注射透明质酸钠联合牙合垫治疗颞下颌关节不可复性盘前移位疗效优于单纯的关节上腔注射治疗透明质酸钠。     

Mimics在颞下颌关节紊乱病髁突体积、表面积及形态学指数测量中的应用

目的 利用Mimics软件研究不同性别、正常健康人群与颞下颌关节紊乱病(temporomandibular disorders, TMD)患者髁突形态学及位置差异。方法 从台州市中心医院口腔科就诊患者中选取符合纳入标准的研究对象40例,符合TMD诊断患者20例为研究组,无关节疾患的安氏Ⅰ类错牙合正常健康人群20例为对照组,行锥形束CT扫描,利用Mimics19.0三维重建,测量髁突体积、表面积、形态学指数(morphological index, MI),进行统计学分析。结果 TMD患者髁突体积、表面积、MI值均小于正常健康人群(P<0.05),男性髁突体积、表面积、MI值均大于女性(P<0.05),左右侧髁突体积、表面积、MI值差异无统计学意义(P>0.05)。结论 TMD患者相比正常健康人群髁突体积、表面积更小,Mimics软件可以有效地测量髁突体积和表面积,并为确立正常人群和TMD患者髁突体积和表面积参考值提供助力。     

Subconscious temporomandibular dysfunction therapy: A new therapeutic approach for temporomandibular disorders

AIM: To evaluate a new therapeutic approach that may permanently address excessive involuntary muscle activity which causes temporomandibular disorders (TMD). METHODS: A cohort of 69 TMD patients (33 men and 36 women, age range 14-71 years) was treated with Subconscious Temporomandibular Dysfunction (STeDy) therapy. A thick awareness splint assisted patients to gradually recognize the interdependence between psychological pressure and subconscious muscle activity. The STeDy therapy lasted for one year and involved three stages: (1) data collection including medical history, clinical examination and psychological evaluation; (2) application of the awareness splint and consultation on a monthly basis; and (3) final evaluation. RESULTS: About 10% of patients (3 men and 4 women) quit the STeDy therapy within the first 3-6 mo due to severe health problems or psychosocial reasons. Based on the absence of objective and subjective clinical symptoms as well as on radiographic findings, the temporomandibular dysfunction treatment was successful in all remaining 62 patients that completed the year-long therapy. Symptoms, including recurrent headache, morning fatigue, clicking sound or painful temporomandibular joint disorders, were eliminated in all patients within the first six months. By completion of the STeDy therapy, all patients had learned to recognize stressful conditions and cognitively avoided displaying excessive bruxism or other subconscious activity of the stomatognathic muscles. A follow-up after at least one year indicated the permanent nature of the cognitive treatment in all patients, illustrating the fact that subconscious muscle activity due to stress plays a principal role in the great majority of TMD, at least in adults. CONCLUSION: The STeDy therapy successfully and permanently resolved TMD problems of all patients that completed the year-long treatment.     

Temporomandibular joint pain: relationship to internal derangement type, osteoarthrosis, and synovial fluid mediator level of tumor necrosis factor-alpha

OBJECTIVES: The purpose of this study was to investigate whether patients with temporomandibular joint (TMJ)-related pain classified as capsulitis/synovitis may be linked to magnetic resonance imaging (MRI) findings of internal derangement, osteoarthrosis, or the synovial fluid aspirate findings of tumor necrosis factor-alpha (TNF-alpha) level. STUDY DESIGN: The study comprised 23 patients with temporomandibular disorders (TMD), who had nonchronic pain (pain onset < or =6 months) and a unilateral TMJ-related diagnosis of capsulitis/synovitis. Bilateral sagittal and coronal magnetic resonance images were obtained to establish the presence or absence of internal derangement, osteoarthrosis, or both. TMJ synovial fluid aspirates were obtained from the pain and contralateral nonpain sides to determine the TNF-alpha level. RESULTS: Comparison of the TMJ side-related data showed a significant relationship between the clinical TMD diagnosis of capsulitis/synovitis and the MRI diagnoses of TMJ internal derangement (P =.002) and of TMJ internal derangement type (P =.04). The mean TNF-alpha level in synovial fluid aspirates from TMJs assigned a clinical TMD diagnosis of capsulitis/synovitis was significantly higher than in those obtained from contralateral nonpain sides (P =.001). There was no correlation between the clinical diagnosis of capsulitis/synovitis and the MRI diagnosis of TMJ osteoarthrosis (P =.13) or between the MRI diagnosis of TMJ osteoarthrosis and that of TMJ internal derangement (P =.70) or TMJ internal derangement type (P =.33). CONCLUSIONS: The results suggest that the TMJ pain condition of capsulitis/synovitis is related to TMJ-side specific MRI diagnoses of internal derangement and internal derangement type, and synovial fluid aspirate findings of TNF-alpha level. The data confirm the concept of elevated mediator level as a diagnostic approach for patients presenting with TMJ-related pain. MRI and synovial fluid aspirates may be used as diagnostic methods for evaluating TMJ-related pain conditions.     

TMJ Vibrations in Asymptomatic Patients Using Old and New Complete Dentures

Purpose: The aim of this study was to assess the presence of temporomandibular joint (TMJ) noises in subjects with severe bone resorption, who have worn the same complete dentures for over 10 years, and 5 months after treatment with increments of acrylic resin on the occlusal surface after having new dentures in place. Methods: After applying the research diagnostic criteria (RDC)/temporomandibular disorder (TMD) questionnaire, 20 asymptomatic subjects were assessed before and 5 months after the new dentures were put in place. Joint vibrations were assessed by the Sono Pak program by selecting the vibrations that occurred during the opening and closing cycle. Results: The means of the results revealed a nonnormal distribution and were submitted to Kruskal‐Wallis statistical analysis (p < 0.05). The vibration means were of low intensity (≤9.96 Hz). After rehabilitation, there was a reduction in the vibrations (≤5.2 Hz) statistically significant only at the end of mouth opening with the old dentures when compared with the other cycles. Conclusion: The intensity and number of occurrences of joint vibrations were reduced after 5 months of wearing new dentures.     

Changes in temporomandibular disorders after treatment with new complete dentures

A total of 250 edentulous patients (118 non-denture and 132 denture wearing) awaiting treatment for new complete dentures were examined for signs and symptoms of temporomandibular disorders. Signs and symptoms of temporomandibular disorder (TMD) were evaluated before prosthetic treatment, 3 months and 3 years after denture insertion by means Helkimo's Anamnestic and Clinical Dysfunction Indices. Before treatment began, patients were observed to have a low prevalence of signs and symptoms of TMD. This prevalence decreased, but was not statistically significant, in the 3 months and 3 years after denture insertion. No statistically significant correlations were found between signs and symptoms of TMD and denture retention, stability, occlusal errors, freeway space, age of present denture, or number of sets of dentures.     

正畸治疗对下颌髁突肥大术后颞下颌关节的影响

目的:评价正畸治疗对下颌髁突肥大术后颞下颌关节的影响,并探讨其术后关节的稳定性。方法:下颌髁突肥大高位切除术后转诊患者20例,男8例,女12例,年龄17~34岁,平均21.2岁,采用固定或隐形正畸治疗,种植钉压低患侧上颌后牙。术前、术后及正畸后进行颞下颌关节功能对比,常规拍摄锥形束CT(CBCT),头颅定位侧位片,Tc99m_MDP颌骨计算机体层扫描(SPECT)检查,着重测量关节间隙的改变。结果:术前患侧和健侧比较关节间隙(包括前间隙、上间隙及后间隙)无统计学差异,手术后及正畸后各关节间隙手术侧与非手术侧差异有统计学意义。结论:髁突高位切除术联合术后正确的正畸治疗可以有效改善患者由于髁突肥大导致的颜面及错牙合畸形以及由此引发的颞下颌关节障碍,正畸治疗后髁突回到关节窝正常位置,患侧髁突改建,稳定性较好。     

Prevalence of temporomandibular disorder signs in patients with complete versus partial dentures

Objectives: To determine the prevalence of signs of a temporomandibular disorder (TMD) in completely edentulous patients wearing upper and lower complete dentures (CD) and to compare this to the prevalence of signs in partially edentulous patients wearing upper and lower clasp-retained acrylic removable partial dentures (RPD). Materials and methods: A questionnaire and a clinical examination were used to assess 200 patients. One hundred of these were complete denture wearers being treated for the provision of replacement CD. The other 100 patients were partially edentulous patients, who had RPD replacing upper and lower partially missing teeth and their supporting structures. Results: It was shown that there was a statistically significant difference between the two groups regarding the presence of temporomandibular signs. Partially edentulous patients wearing upper and lower RPD had a significantly higher prevalence of TMD signs than edentulous patients wearing CD (36% compared to 17%). They also exhibited significantly (P<0.04) more signs of joint tenderness (18%) on clinical examination compared to (5%) only in the CD-wearing patients. Tenderness upon palpation in the periauricular region was the most common site reported in both groups. Conclusions: The partially edentulous patients (wearing RPD) exhibited more TMD signs when compared with the CD-wearing patients. Significantly, more partially edentulous patients had joint tenderness (P<0.04) than did CD-wearing patients. The masseter muscle most commonly demonstrated muscle tenderness.     

352名无牙颌老年人颞下颌关节紊乱病调查

目的 对无牙颌老年人颞下颌关节紊乱病( temporomandibular disorders,TMD)的情况进行调查并初步探讨相关的危险因素.方法 352名北京市无牙颌老年人参加本次调查,男性198人,女性154人.根据Helkimo指数设计调查表,由专业培训人员对受试者进行颞下颌关节相关症状和体征的检查并记录.根据性别以及是否进行全口义齿修复分别统计分析.结果本组人群TMD查体阳性率为43.2％(152/352),其中阳性体征以关节弹响多见,占34.1％( 120/352);下颌运动偏斜次之,占18.2％(64/352),关节区及咀嚼肌触痛则发生较少,下颌运动痛最少.男性TMD查体阳性率为36.9％(73/198),女性为51.3％(79/154),两者差异有统计学意义(P =0.0067 ＜0.01);行全口义齿修复的无牙颌老人TMD查体阳性率为38.6％(91/236),未修复者TMD查体阳性率为52.6％(61/116),两者差异有统计学意义(P =0.0125 ＜0.05),其OR值为1.767(1.130～2.763).结论 性别因素及不良咬合均可能是影响老年无牙颌者TMD患病率的危险因素.