• 구강회복응용과학지
• /
• 제31권2호
• /
• pp.126-133
• /
• 2015

염증에 의해 파괴된 치주조직은 외과적 방법만으로 조직의 완전한 재생과 심미수복을 이루는 것이 어렵다. 특히, 임플란트와 관련된 문제라면 심미성의 향상을 얻기가 더욱 어렵다. 23세 여자 환자가 비심미적인 전치부 임플란트 보철물을 개선하고자 내원하였다. 개인 치과의원에서 수차례 치조골 이식술과 연조직 이식술을 받았으나 실패한 상태였다. 염증을 제거하고 심미성을 향상시키기 위해 유리치은이식술 시행 후 골유도재생술과 혈관개재 골막결합조직 이식술(vascularized interpositional periosteal connective tissue graft)을 이용한 치조제증대술을 시행하였다. 심미적 보철물 제작을 위해 임플란트 지지형 보철물 대신 인접 자연치를 이용한 전통적인 고정성 보철물을 선택하였다. 상악 전치부 치열에서 비심미적인 임플란트 보철물을 외과적 그리고 보철적 접근을 통한 다각적 방법을 병용함으로써 더 우수한 심미성을 회복한 증례를 소개하고자 한다.

• 구강회복응용과학지
• /
• 제36권4호
• /
• pp.289-295
• /
• 2020

비심미적인 임플란트유지형 보철물의 심미성 개선은 매우 어려운 문제이며 특히, 상악 전치부 임플란트와 관련되어 있는 경우는 더욱 그러하다. 본 증례는 상악전치부 임플란트의 주기적 배농과 비심미성을 주소로 보철과의사로부터 의뢰된 69세 남자 환자의 심미성 개선에 관한 보고이다. 임플란트는 다소 깊게 식립되어 긴 임상치관길이를 보였으며, 주변 연조직 양도 부족하였다. 임상 검사와 방사선검사 후, 깊게 식립된 임플란트의 제거 대신 예후가 불량한 인접 치아의 발치 후 임플란트를 추가 식립하여 임플란트 유지형 고정성보철물을 제작하고, 깊게 식립된 임플란트는 제거 대신 치조제 증대에 도움을 주기 위해 침수(submergence)시켜 치조제를 증대시키는 방식을 선택하였다. 적절한 진단이 동반된 임플란트 침수가 전치부의 임플란트 비심미성을 개선시킬 수 있는 또다른 대안이 될 수 있을 것이다.

• 대한치과교정학회지
• /
• 제52권1호
• /
• pp.53-65
• /
• 2022

Objective: Planning of incisal position is crucial for optimal orthodontic treatment outcomes due to its consequences on facial esthetics and occlusion. A systematic summary of the proposed parameters is presented. Methods: Studies on Google Scholar^©, PubMed^©, and Cochrane Library, providing quantitative information on optimal central incisor position were included. Results: Upper incisors supero-inferior position (4-5 mm to upper lip, 67-73 mm to axial plane through pupils), antero-posterior position (3-4 mm to Nasion-A, 3-6 mm to A-Pogonion, 9-12 mm to true vertical line, 5 mm to A-projection, 9-10 mm to coronal plane through pupils), bucco-lingual angulation (4-7° to occlusal plane perpendicular on models, 20-22° to Nasion-A, 57-58° to upper occlusal plane, 16-20° to coronal plane through pupils, 108-110° to anterior-posterior nasal spine), mesio-distal angulation (5° to occlusal plane perpendicular on models). Lower incisors supero-inferior position (41-48 mm to soft-tissue mandibular plane), antero-posterior position (3-4 mm to Nasion-B, 1-3 mm to A-Pogonion, 12-15 mm to true vertical line, 6-8 mm to coronal plane through pupils), bucco-lingual angulation (1-4° to occlusal plane perpendicular on models, 87-94° to mandibular plane, 68° to Frankfurt plane, 22-25° to Nasion-B, 105° to occlusal plane, 64° to lower occlusal plane, 21° to A-Pogonion), mesio-distal angulation (2° to occlusal plane perpendicular on models). Conclusions: Although these findings can provide clinical guideline, they derive from heterogeneous studies in terms of subject characteristics and reference methods. Therefore, the optimal incisal position remains debatable.

• 대한치과의사협회지
• /
• 제13권2호
• /
• pp.175-179
• /
• 1975

I had treated a patient, 58 years old male, with squamous cell carcinoma in mandible. In the patient, radical operation was made by hemimandiblectomy, neck dissection and gnathoplasty with resin made mandible. The patient was radically treated, and the results were excellent in point of view of mandibular functions and esthetics.

• 대한치과의사협회지
• /
• 제19권11호통권150호
• /
• pp.975-979
• /
• 1981

In May 1981, the author placed Free Design Blade Implant into a 24-year old female patient with missing teeth of lower left molars, who did not want a removable partial denture. The bone available was good enough and in apparent general good health. The implant bridge was mad by four units, from 1st premolar to implant head, which is now in good esthetics and function.

• 대한치과기공학회지
• /
• 제15권1호
• /
• pp.63-72
• /
• 1993

The following results were come out after the careful study on the rational application of dental surveyor in the clinic 1. The adequate path of placement satisfying guiding plane, retention non-interference and esthetics. 2. The location of clasp arm and the accurate under cut position and amount of clasp tip can be judged. 3. In case that the model needs to be mounted to the surveyor, the exactly same location can be attained by the means of the tripoding. 4. The unnecessary undercut areas in the path of placement and removal car be corrected. 5. The surveyor is essential in manufacturing dental prosthesis and it can also carry out all sorts of prospective designs In terms of the diagnosis and treatment.

• Journal of Korean Dental Science
• /
• 제14권1호
• /
• pp.32-39
• /
• 2021

'Crossed occlusion' is the condition in which occlusal intercuspation is lost when several teeth on upper and lower jaw remain. This report describes a clinical case in which a patient had two upper-left posterior teeth and two lower-right posterior teeth; typically known as left-right crossed occlusion. Considering the patient's general condition and financial situation, the treatment plan included placement of two implants on each jaw against the remaining teeth using surgical guide. To find out the ideal position of implants, digital diagnostic wax-up was preceded by superimposing the cast and cone beam computed tomography image, which was aided with radiographic stents. The consequent surveyed implant bridge provided stable vertical stop for fabrication of the implant assisted removable partial dentures. The patient was satisfied with the functionality and esthetics of definitive prosthesis.

• 대한심미치과학회지
• /
• 제15권2호
• /
• pp.35-38
• /
• 2006

A technique is presented through clinical cases for restoring anterior teeth to enhance dental esthetics using bonded partial ceramic restorations (BPCRs) without or with minimum reduction of tooth structures. These restorations offer the advantages of the superior properties of ceramic materials and the conservative nature of a direct composite restoration at the same time.

• 구강회복응용과학지
• /
• 제34권3호
• /
• pp.208-217
• /
• 2018

상악 전치부는 심미적으로 민감한 부위이며, 치아 외형과 치은의 조화도 치료의 성공과 밀접한 관련이 있다. 이를 위해서는 정확한 진단과 치료계획이 필수적이며, 필요 시 치아 주위 연조직에 대한 처치 등이 동반될 수 있다. 연조직 처치로서 외과적 치관연장술 중 하나인 치은절제술을 고려할 수 있으며 이를 통해 심미적인 보철 수복을 할 수 있다. 상악 전치부는 심미뿐 아니라 기능 또한 고려하여야 한다. 지대치 주모형과 순측만을 수정한 진단 납형 모형을 스캔 및 중첩하여 디자인 및 가공하면, 최소한의 교합조정을 통해 기존의 편안했던 교합을 재현해 줄 수 있다. 본 증례에서는 치은절제술 및 모형 중첩을 통해 심미 수복을 진행하였고, 그 결과 심미와 기능모두에서 환자의 만족도를 높였기에 이를 보고하는 바이다.

• 대한치과보철학회지
• /
• 제42권1호
• /
• pp.49-57
• /
• 2004

Statement of problem : The increased awareness of esthetics in dentistry has brought the esthetic consideration in prosthetic restorations . Dental ceramics offer better esthetics for use of prosthetic restorations. Unfortunately, dental ceramic materials are not always the most suitable candidate materials since their inherently brittle nature. In recent years, basic research in ceramic science has led to the recognition or several approaches to strengthen and to enhance esthetics of ceramics. Several all ceramic systems use ceramic core and porcelain build up structures . Ceramic cores influence to strength of all ceramic crowns . So the strength of ceramic cores is important to all ceramic crowns. Purpose : The purpose of this study is to estimate the flexural strength of ceramic cores in some all ceramic systems. Material and method : A biaxial flexure test was conducted on three groups(Cergo, Empress 2, In-Ceram). Each group consisted of 30 discs of nearly identical dimension with a 0.5mm, 1.0mm, 1.5mm thickness and 12mm in diameter. The fracture load was recorded by Instron. Analysis of valiance(ANOVA) and Tukey's tests were performed using SAS statistical software. Results : 1.5mm thickness of specimens were significantly stronger than 0.5mm and 1.0mm thickness of specimens in Cergo and In-Ceram. But each sepecimen group of Empress 2 was no significantly strength by thickness. In order of In-Ceram, Empress 2 and Cergo has significantly stronger strength in the same thickness. Conclusion : In-Ceram is the strongest ceramic material in 3 materials. All the materials can be used according to the required characters.