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외배엽 이형성증 환자의 골 이식후 over denture 제작의 치험예
송광엽 의치학사 1990 치과임상 Vol.10 No.6
A six year old male patient of hereditary ectodermal dysplasia with oligodontia was treated by constructing upper and lower overdentures on natural teeth Patient was improved cosmetically, phonetically, psychologically and in mastication. After 18 months from delivery of overdenture, the relining of upper and lower dentures was done according to jaw bone growth. Periodic recall is required and derure should be reconstructed according to jaw bone growth.
상악골 결손 환자의 보철물 장착전후 음성변화에 관한 임상적 연구
송광엽,신효근,신금백 全北大學校 齒醫學硏究所 1993 전북치대논문집 Vol.11 No.1
The degree of hypernasality has been assessed by the listener's judgements, but perceptual assessments have poor scientific reliabilities. So the objective instruments with diagnostic accuracy have been needed to test hypernasality. This study analyzed the nasalance score using Nasometer after prosthetic treatments in three patients with hemimaxillectomy. The simple vowels, /a/ and /i/, were tested for the degree of hypernasality before and after prosthetic treatments. Also we used high-speed analysis system using PC with DSP for assessment of resonance. The testing words were consisted of simple vowels, /a/ and /t/. The obtained results were as follows. 1. Nasalance of the patients with prosthetic treatments were decreased about 25∼93%. 2. The first Formants of the patients with prosthetic treatments were decreased, and these results showed the forward movements of tongue. 3. The voice onset time has decreased by 56.57ms in comparison with preprosthetic state, and these results meant articulation reactions after prosthetic treatments were better than those of preprosthetic state.
이상건,송윤관,송광엽 대한치과기재학회 1999 대한치과재료학회지 Vol.26 No.3
In addition to continuing the search for more accurate and dimensionally stable materials for denture bases, recently several processing methods for denture base resins which may reduce dimensional change during fabrication has been developed. The purpose of this study was to compare the dimensional accuracy of denture bases cured by four denture base processing methods, using the conventional heat-compression molding method, the continuous-pressure injection method, the microwave curing processing method, and the Sulfone system. A metal die simulating a maxillary edentulous arch and a polyvinylsiloxane impression(Reprosil, L. D. Caulk Co. U.S.A.) were used to construct 40 simulated master casts and denture bases with artificial teeth. Forty simulated denture bases 3 to 4㎜ thick were processed by four denture base processing methods following the manufacturer's instructions. The processed denture bases and casts sectioned through the posterior palatal region to allow measurement of its change by means of an travelling microscope. Observations were made on center of posterior palatal sectioned region. One-way ANOVA and paired samples t-tests were employed to compare the differences in distortion after deflasking and after finishing and polishing. The obtained results were as follows; 1. After deflasking, dimensional changes were diminished in order of conventional heat-compression molding, Sulfone system, continuous-pressure injection method, microwave processing method(p<0.05). 2. After finishing and polishing, dimensional changes were diminished in order of conventional heat-compression molding method, Sulfone system, microwave processing method, continuous-pressure injection method. The significant difference was found between conventional hear-compression method, continuous-pressure injection method(p<0.05). 3. The significant difference was found between after deflasking and after polishing in all methods, except continuous-pressure injection method(p<0.05).