Objective: to study the reasons, clinical diagnoses and treatment methods of cracked tooth.
目的：探讨牙齿隐裂的的成因、临床诊断方法和治疗措施。
To study the early diagnosis and curative effect of cracked tooth by componte resin filling.
目的探讨牙隐裂的早期诊断和治疗的疗效。
Objective to investigate the features of the occlusion pattern in patients with cracked tooth syndrome (CTS).
目的调查自然牙牙裂综合征(cts)的型特点。
It is difficult to diagnose a cracked tooth since the symptoms associated in this syndrome are often bizarre and varying.
因为隐裂牙综合征的临床表现多种多样，早期诊断比较困难。
Results It is necessary to reserve the cracked tooth and the function of mastication is better when the preformed metal crown has been worn out.
结果用预成金属冠治疗的牙髓炎、根尖周炎的患牙的保存和咀嚼功能均较好。
Conclusion: Cracked tooth was caused by multiple factors, early diagnosis, comprehensive treatment, and follow up in different period are key to the treatment.
结论：牙隐裂因多种因素所致，早期发现，综合治疗，定期复查是治疗的3个关键。
The method can debase the possibility of the tooth fracture during and after treatment. Methods The patients with cracked teeth have the symptom of pulpitis or periapical periodontitis.
方法选择在口腔门诊首次就诊的具有牙髓炎或根尖周炎症状的隐裂牙，采用预成金属冠修复后再作牙髓病治疗。
CONCLUSION: Structure weak area of tooth was the internal cause of cracked-teeth occurrence, and traumatic occlusal force was the external factor tha.
结论：牙结构的薄弱环节是牙隐裂发生的内在因素，创伤性(？)力是促使牙隐裂发生的外在动力。
OBJECTIVE: To study the pathogenic factors and the therapy of cracked-tooth METHODS: 129 teeth of 98 patients with cracked-teeth were observed, and treated.
目的：研究牙隐裂的致病因素和治疗原则。方法：对98例牙隐裂患者的129颗患牙进行临床观察、病因分析和治疗。
The results show that the cracks on the sealing labyrinth are heat-fatigue cracked resulted by the temperature field around the third tooth of the sealing labyrinth.
结果表明，封严篦齿上的裂纹为热疲劳裂纹，裂纹的形成主要与第三封严篦齿附近的温度场有关。
The results show that the cracks on the sealing labyrinth are heat-fatigue cracked resulted by the temperature field around the third tooth of the sealing labyrinth.
结果表明，封严篦齿上的裂纹为热疲劳裂纹，裂纹的形成主要与第三封严篦齿附近的温度场有关。
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