[A contour and mineral content comparison of vascularized and non-vascularized bone grafts].

This study made a comparison between vascularized bone graft (VBG) and non-vascularized bone graft (NVBG) in mandible of canine by using electron computer to assess the contour of grafted bone and measuring the mineral contents. On the 3rd, 5 th, 7 th, 15 th postoperative day, the contour of VBG and NVBG were similar and all of them kept the original contour. On the 30 th,60th,90th,180th postoperative day, VBG remained the original contour, but the contour of NVBG became thicker obviously than that of VBG for the remained cortical bone(most of which was resorbed) were enveloped with a lot of new bone.

[Psychologic inversigation of parents of patients with congenital cleft palates and lips].

The parents of 100 patients with congenital cleft palates and lips were investigated psychologically.The results showed that the treatment was very urgent,In spite of poor knowledge in etiology and treatment.The effectiveness between patient and relation of parents,family was smaller than than that in abroad,and psychologic status was more stable.

[Radiographic investigation of idiopathic osteosclerosis of jaws].

Full-mouth radiographs of 1321 patients were examined for the presence of radiopacitics that could not be attributed to any known sources of bone formation.A total of 75 patients exhibited these foci of idiopathic osteosclerosis.The incidence of disease is 5.

[The measurement of EMG and deglutition pressure after glossal reconstruction].

Newly designed computer system (SAMP-EMG) was utilized,to measure the myoelectric signal in each region of the 100ms integral values and do the power spectral analysis in 10 normal people and 20 patients.At the same time,the pressure of deglutition was determined with the liquid pressure conducting electronic device.The results were :1.

[One-stage surgical procedure of adult cleft palate with dentofacial deformity].

2 cases with primary adult cleft palate combining severe dentofacial deformities were undergone one-stage procedure of modified Le Fort I segmental osteotomy and Furlow's double reserving Z plasty,and with with satisfactory clinical effectiveness.Follow-up results show that the one-stage procedure is not only reducing treatment time and period,but also correcting velopharyngeal function.

[The application of temporary crown and bridge for fixed prosthetic restorations].

The preparation of teeth for fixed prosthetic restoration needs the temporary restoration for various reasons.Once the enamel has been removed,a vital tooth of the sensitive dentin is exposed to the oral environment. If left unprotected teeth,the patient would experience a significant amount of sensitivity to the various stimulations to which the tooth is exposed.

[Applied DNA-DNA hybridization in determination of oral Streptococcus.].

Quantitative measurement of DNA-DNA hybridization is a new technique for determination of unknown bacteria.It is more valuable how to identify strains which is rare difference on phenotypic characteristics.It is important to resolve bactericial taxionmy and identify new strain.

[A preliminary study of BCG adjuvant therapy in oral and maxillofacial malignant melanoma.].

Malignant melanoma is a kind of tumor with higher malignant and lower therapeutic effect.it is demonstrated by experiment that melanoma cells have antigenicity and refer to immunology.BCG is a kind of biologic response modifier(BRM).

[The measurement of shade of colour on 100 cases permanent teeth in Shanghai.].

With the help of a portable Minolta-CR 100 colour difference meter,measurement of upper incisors' surface colour was for the first time domestically carried out in 100 young and middle-aged Shanghai residents,and their mean parameters were also determined.Our method was met he requirements of CIE1931 XYZ surface colour system as well as that of CIE1976 L*a*b* surface colour system.The meter has a quality of high accuracy and the figures thus obtained are concentrated and representative.

[Primary non-Hodgkin's lymphoma on parotid gland clinicopathologic and immunohistochemical study.].

A clinico-pathologic and immunohistochemical study of 20 cases of primary non-Hodgkin's lymphoma on the parotid gland was made.The result showed 45% of the cases originated from B cells,white 40% from T cells,the rest 15% from the small lymphocytes.Immunohistochemical study was made on 11 cases,the result of immunophenotype was in concordance with the histopathologic diagnosis in 10 cases,except in one case which was initially diagnosed as plasmocytoid lymphocytic lymphoma,but the immunmophenotype suggested that it was T cell type of malignant lymphoma(ML).

[Orthognathic surgery of dentofacial deformities post surgerical repairing of cleft palate and lip.].

10 cases with maxillary development limited post surgical repairing of cleft palate and lip were undergone modified Le Fort I segmental osteotomy,that is,put the maxilla forward without velopharyngeal function change and oro-nasal fistula.By Computer Aided Simulation System for orthognathic surgery(CASSOS),analysis of dental pulp,evaluation of velopharyngeal function,compacting profile pre-to-post operation, authors described that surgical procedure has the satisfactory effectiveness.

[Clinical assessment of rehabilitation after radical surgery of tongue cancer.].

It is same important to consider both patient's own evaluation and the clinical examination.It is helpful to judge the state of the functional rehabilitation. We have followed up 128 cases of tongue cancer postoperatively,recieved 104 letters and checked up 87 patients in the clinic.

[Changes of enamel intake of fluoride amount while PH and fluoride concentration varies].

The four enamel pieces,which are from one bovine tooth,are treated individually by 2.7% NaF gel(pH4),2.7% NaF gel(pH7),1%NaF gel (pH7.

[Study on the biocompatibility of commonly used root canal filling materials].

The biocompatibility of commonly used four endodontic sealers and three brands of gutta-percha was studied by cell attachment experiment in vitro and SEM technique.The results indicated that all the materials tested had significant cytotoxicity.Clinically,in order to avoid irritrating periapical tissue mechanically and reduce cytotoxicity,overfilling should be avoided when possible.

[Clinical application of cluster analysis in repairing prosthesis ears].

Along with developments and progresses of microsurgery,plastic surgery became very often used method to reconstruct orofacial defects,but for missing ears the prosthesis methods are still a better way comparing surgery The main merits are :no wound,short treatment time,100% success rate,easily figure established.For simplified steps and saving time in the procedure of making prosthesis ears.300 different types ears from recording cases models are analysed and special different type wax-up ears and special models are made to provide different patients as needing for selection.

[Clinical analysis and treatment of 68 spaced dentition cases].

One of the characteristic feature of normal occlusion is arch continuity, as expressed by proximal contact between all teeth in each dental arch.The dental arches of a consider able number of individuals show space between some,or even all,of the teeth.Such dental arches are know as spaced dentition.

[Evaluation of velopharyngeal function after later surgical repair of cleft palate. ].

This study detected 60 cases of patients of later surgical cleft palate repairing with different operative procedures,based on nasopharyngeal fiberscope and image processing detective system of nasopharyngeal function.They were divided into two groups,30 cases with Furlow's double reversing Z plasty,and others with traditional palatoplasty.The results were as follows:the type of velopharyngeal closure with later palatoplasty mainly were circus,semi-circus,and the rate of operative success only was 46.

[An analysis of the cephalometric investigation of the Chinese craniofacical pattern in neolithic].

Craniofacial morphology provides valuable data for determining races and ethnic groups and evolutionary adaptedness of prehistoric human population.Craniofacial investiation yield reliable clues to the ethnic of skeletal series,because craniofacial traits can be evaluated in different ethnic groups.The neolithic human skull of Chinese in this study are about 6000 years ago (B.

[Study on the apical sealability of warm lateral condensation techniques].

An apical leakage test and a visible light spectrophotmetric analysis were performed to compare the apical sealability of warm lateral condensation and conventional lateral condensation techniques.The results showed that warm lateral with sealer delivered best sealability.It was superior to warm lateral without sealer(P<0.