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1.
Article in Chinese | WPRIM | ID: wpr-1003447

ABSTRACT

@#The high incidence and untreated rate of root caries, a common and frequently occurring oral disease with challenging treatment in elderly individuals, is the main cause of tooth loss among elderly people, as rapid development results in pulpitis and periapical periodontitis or residual crown and root, which has been regarded as one of the common chronic oral diseases seriously affecting the quality of life of elderly people. Thus, early intervention and prevention are important. Traditional dental materials for preventing root caries have been widely used in clinical practice; however, they have the disadvantages of tooth coloring, remineralization and low sterilization efficiency. A series of new dental materials for preventing root caries have gradually become a research hotspot recently, which have the advantages of promoting the mineralization of deep dental tissue, prolonging the action time and enhancing adhesion. Future caries prevention materials should be designed according to the characteristics of root surface caries and the application population and should be developed toward simplicity, high efficiency and low toxicity. This review describes current research regarding anti-caries prevention material application, serving as a theoretical underpinning for the research of root caries prevention materials, which is important for both promotion in the effective prevention of root caries and improvement in the status of oral health and the quality of life among old people.

2.
Article in Chinese | WPRIM | ID: wpr-479820

ABSTRACT

37 free second molar residual crowns were repaired by glass fiber post and resin core(GF group),and another 37 by cobalt chromium alloy casting post and core(CCA group).The success rate of 1 ~5 years of GF group was 1 00%,1 00%,91 .9%,86.5% and 81 .1 %;that of CCA group 97.3%,91 .9%,83.8%,81 .1 % and 73.0%,respectively(P >0.05).

3.
China Modern Doctor ; (36): 59-62,65, 2015.
Article in Chinese | WPRIM | ID: wpr-1037806

ABSTRACT

Objective To observe the effects of root canal preparation for post-core immediately after root canal obtu-ration. Methods A total of 106 cases of mutilated coronal tooth structure, after endodontic therapy, indicated for post-core and crown, collected from dental outpatients in our hospital during 1st Oct 2011-30th Sep 2013, were randomly divided into the control group and the experimental group. The experimental group were prepared for post space 7 days after root obturation, and then the teeth were prepared for retention of crowns; while in control group, post space was made 7 days after obturation. The two groups were observed in intervals of every half a year after treatment to examine the integrity, masticatory function and retention. Meteyards were established to evaluate its clinical effects. Results During follow-up visiting patients half a year to 2 years, in control group, there was 1 patient with splitting along buc-clingual direction and 4 patients with fracture of coronal structure before preparation;after restoration there were 3 pa-tients with periodontitis in the 1st year, 4 patients with periodical periodontitis, and 1 patient with loosening of post in the 2nd year, all of which were failure cases. In experimental group, before preparation there were no fracture case;after restoration there were 2 patients with periodical periodontitis in the 2nd year and 1 patient with periodontitis in 1 year. All the 3 cases counted as failure cases. The total successful rate in control group was 76.36%, and 94.12% in experimental group. The successful rate in the experimental group was significantly higher than the control group(P<0.05). Conclusion Root canal preparation for post-core immediately after obturation is more successful than the usual way with better apical sealing,less complication and frequency of teeth fracture .

4.
Article in Chinese | WPRIM | ID: wpr-585313

ABSTRACT

Objective:To presents a new way of constructing post crowns for the anterior maxillary teeth which had the subginginval crown fracture more than 3 mm.To discusse the difficulties in the restoration of the subgingival residual roots and residual crowns of anterior maxillary teeth,and to explore the principles of the new restoration by the casting post-core and the porcelain fused mental crowns with wings. Methods: 23 patients(26 teeth) which had crown fracture more than 3 mm under the gingival were enrolled in this study.After those residual roots and crowns were endodontically treated following the conventional root canal therapy,the casting post-core and the porcelain fused mental crowns with wings were applied to reconstructing those missing crowns. Results: After 3 months to 5 years clinic observation,restored crowns were still stable with good retention and fracture resistance. Conclusion: Those residual roots and crowns can be preserved by this innovative way and can also acquire satisfactory effects in esthetics and functions.

5.
Article in Chinese | WPRIM | ID: wpr-548027

ABSTRACT

Discussed how to use column split-core crown to repair the indications of the residual crown and root of posterior teeth,as well as its clinical results.Root canal treatment of the residual root,repaired the residual crown and root of posterior teeth with column split-core crown,and then used it as a fixed bridge abutment.No loose,no pain,no loss and jaw bite was in a good recovery compare to the standard after 1-2 years follow-up.It is a good method to use column split-core crown to repair the residual crown and root of posterior teeth under certain conditions.

6.
Article in Chinese | WPRIM | ID: wpr-671031

ABSTRACT

Based on the properties of the zirconia all-ceramic material,this report presented a clinical application with the zirconia all-ceramic crown/bridge for restoration of multiple residual roots and crowns.

7.
Article in Chinese | WPRIM | ID: wpr-528224

ABSTRACT

The residual crown and root has very important physiological significances,but there are many problems in the clinical treatment,such as overtreatment and defensive treatment,etc.This article analyze the background and causes of these problems,and provids some corresponding ways to solve them.

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