[A study on change of proliferating cell nuclear (PCNA) during DMBA induce golden hamster cheek pouch carcinoma].

109 cases were studied by immunohistochemisty with anti-PCNA antibody specimens which dyed by PCNA immunohistochemistry were counted with net and morphology observed.The results indicated that:a few of PCNA-positive cells had been seen in the basal cells of normal epithelium. An increased percentage of PCNA-positive cells was found in dysplasia and carcinoma.

[The effects of LTA and plaque on the periodontal tissue of the Guinea pig].

40 Guinea pigs were divided into 4 groups.The gingival sulcus of 2 mandibular incisors were irrigated with LPS(Lipopolysaccharide),LTA (Lipoteichoicacid),PL(Subgingival plaque) and NS(Normal saline solution) respectively.2 animals were sacrificed in group of 5 successively at 1,2,3,6,8 week after irrigation.

[McNamara cephalometric analysis for Shanghai adolescents and adults].

This paper collects 101 Shanghai adolescents and adults with normal occlusion and balance facial profile.Using McNamara cephalometric analysis,it develops linear cephalometric standards for Shanghai adolescents and adults.By mean of SAS statistic software package,the characteristics of craniofacial linear parameters were observed.

[The influence of masking agent on adhesion of composite resin].

In this study we used light cured resin,opaque resin and composite resin/masking agent to bond 24 teeth in vitro and then we tested their bonding stress.We also used these three materials to treat 240 tetracycline stained teeth in clinic.After half a year,one year,two years follow-up we found:in vitro study,the highest stress of composite resin is 144.

[Surgical approach plus Nd:YAG laser irradiation for the management of hemangioma in deep maxillofacial region].

This article introduces a new method for the management of cavernous hemangioma in deep maxillofacial region.Common surgical approach was carried out to expose the mass of hemangioma,then Nd:YAG laser was irradiated it without tumor removal.Immediatelly shrinking of hemangioma can be seen in all these seven cases.

[A retrospective study evaluating effectiveness of different TMJ arthroscopic techniques for discal displacement with or without reducing].

The three arthroscopic techniques were particularly method I(lysis and lavage),method II(disc repositioning and sclerotherapy plus method I),method III(traction,fixation plus method II) in order to make comparative study.The distributions between the 76 joints and three techniques were:14 joints in method I,31 in II,and,31 in III.The total follow-up was 30m(6-84m),and the total success rate was 73.

[A prospective study evaluating effectiveness of TMJ arthroscopy for particular stages of internal derangement].

The purpose of this prospective study is to evaluate effect on particular stages of internal derangement by TMJ arthroscopy.According to Wilkes-Bronstein classification,the distributions between 81 joints and particular stages of ID were:25 joints in II stage,18 in III,24 in IV,and 14 in V.The total 81 joints were undergone by arthroscopic surgery,the total success rates of different stages of ID were:24/25 joints in II stage,16/18 in III,13/24 in IV,and 7/14 in V particularly.

[Diagnostic arthroscopy of the Maraca mulatto's TMJ].

To gain further knowledge about features of Maraca mulatto's TMJ,occlusion,and teeth,we underwent examining 4 rhesus monkeys with 8 joints.The same and different features were concluded between Maraca mulatto's anatomical structures and human begins.Afterwards,10 aged rhesus monkeys with 20 joints were examined by TMJ arthroscopy.

[A preliminary study on the relationship between Streptococcus and Neisseria,Veillonella in an artificial mouth model].

The viable cell count of monobacterial plaque of Streptococcus and mixed bacterial plaque of streptococcus and Neisseria Veillonella,also the demineralization caused by the plaques were observed.The assumption that Neisseria and Veillonella might reduce demineralization of enamel caused by streptococcus was confirmed.The relationship between streptococcus and Neisseria,Veillonella were preliminarily found out.

[Teatment of oral lichen planus with chloroquine and triamcinolone-A].

In this study,single blind grouping method was applied to compare the effect of chloroquine and triamcinolone-A which were used to treat 360 cases of oral lichen planus.The results showed the effect of local injecting triamcinolone-A was better than that of taking chloroquine,and also was better than that of taking triamcinolone-A accompained of chloroquine.Therefore,they were two effective ways to cure OLP and worthy of wide use.

[Analysis of the clinic with pathology and detection using IGSS of 201 cases of discoid lupus erythematosus].

Clinic pathology and detection using IGSS of 201 cases of discoid lupus erythematosus (DLE) were studied in this paper.The results showed:1.DLE usually occured on the low lip(60%);2.

[The management of the treatment and diagnosis for the calcifying odontogenic cyst].

18 Patients with calcifying odontogenic cyst underwent surgery in our Department from 1977 to 1993 were reported.8 male and 10 female aged from 11 to 52 with medium or 33 years were included.16 cases were pathologically confirmed as primary intraosseous cyst(central),and 2 as extraosseous cyst(peripheral).

[Recurrent fetal cellular rhabdomyoma:histopathological and ultrastructural observations].

A mass of the neck in an 8-year-old boy diagnosed with recurrent fetal cellular rhabdomyoma was reported.The recurrent tumor consisted of undifferentiated round and short spindle cells and immature striated muscle cells,which was similar to the primary tumor occured in five years ago.However,there were more large round myoblasts which mainly located at the periphery of the tumor and osteoid stroma in the recurrent case immuno-histochemistry stain and ultrstructure observation suggested that these were undifferntiated mesenchymal cell and myoblasts.

[A study on the influence of zinc on the growth and metabolism of streptococcus in an artificial mouth model].

The influence of zinc on the growth and metabolism of Streptococcus was studied under controlled conditions in an artificial mouth model.the results confirmed the previous conclusion that zinc was capable of inhibiting the growth and metabolism of streptococcus both vivo and in vitro.At the same time,the feasibility of the imitative experiments in an artificial mouth model was proved.

[The effects of retention and adaptation of complete denture on masticatory efficiency].

There are many facts of effectiveness on complete denture.Retention and adaptation are very important to denture's function among them.This thesis used soft relining material for 22 complete denture's patients whose pain,non-retention and etc.

[Clinical significance of the abnormal radiographic manifestations of pulp cavity].

Six cases showing abnormal radiographic appearance of the pulp cavity are presented in this article.According to the etiology.they are approximately divided into four patterns as follows:The first one was caused by hereditary disease,represented by mainly opalescent dentin.

[The comparison of the effect of three restoration materials for the cavity convenience preparation].

The cavity restoration effects of light curing composite,chemical curing composite,glass ionomer were observed,for six and twelve months.The results showed that microleakage increased as time goes on inevitably.The failed incidence of class III restoration by glass ionomer was higher.

[Treating the fine canals and obstructed canals with ultrasound in 70 cases].

The fine canals and obstructed canals were treated with ultrasound in 70 cases.Canals were re-enlarged and filled in 61 cases,with a success rate of 89%.No lateral perforation or tooth facture was due to excessive loss of the teeth structure.

[Malignant pleomorphic adenoma of salivary glands:A clinicopathologic study of 83 cases].

This paper presented the clinicopathologic features of 83 cases of malignant pleomorphic adenomas(MPA) of the salivary glands.The average age of the patients was 53 years old.The ratio from male to female was 1.