Objective:To investigate the effects of occlusion adjustment in the treatment of temporomandibular disorders(TMD) by using the T-Scan II system.Methods:10 cases were chosen from the patients whose chief complaints were maxillofacial pain and temporomandibular joint(TMJ) clicking.All the cases were measured and analyzed by the T-Scan II system prior to and post the occlusion adjustment.The clinical effect of occlusion adjustment was evaluated through the value of visual analogue scale(VAS) and clinical examination.Results:Three months after occlusion adjustment,most of the 10 patients' clinical examination symptoms were relieved.Conclusions:(1) Occlusion adjustment is an effective way in the TMD therapy.(2) The pictures the T-Scan II system reflects are objective、exact and precise.

临床上经常遇到各种原因造成的牙齿面不同程度的磨耗,而牙齿重度磨耗病因复杂且其危害严重,所以,本文主要根据近年来国内外学者的研究,从牙齿磨耗的类型、病因、影响等几个方面,对牙齿磨耗进行综述。

Objective:To investigate the effect of different inner crown materials on periodontal tissue by means of measuring the amount level of AST and ALP in gingival crevicular fluid(GCF)after PFM restoration.Methods:The anterior teeth of 26 patients by random were restored by Ni-Cr alloy PFM,Ti alloy PFM and Au-Pt alloy PFM.GCF was collected from labial and lingual of mesial site and distal site before the tooth preparation by filter paper.At the point of 1 month and 3 months after cementation,GCF was collected at the same sites.The level of AST and ALP were detected by automated chemical analyzer,and analyzed the variation between the pre-restoration and post-restoration.Results:Compared to pre-restoration,all indexes have no conspicuous difference among three groups after 1 month;Ni-Cr alloy group have no difference with Ti alloy group after 3 months.However,Au-Pt alloy group has conspicuous difference with Ni-Cr alloy group and Ti alloy group respectively.Conclusion:Non-noble metal has badnon-favorable effect on the periodontal tissue.It canis easily and correctly to observe the effect of periodontal tissue dynamicallyin the dynamic state after PFM restoration by means of measuring the amount of AST and ALP in GCF.