• 대한치과보존학회:학술대회논문집
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• 대한치과보존학회 2001년도 춘계학술대회
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• pp.235-237
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• 2001

;Dentistry has benefited from tremendous advances in technology with the introduction of new techniques and materials, and patients are aware that esthetic approaches in dentistry can change one's appearance. Increasingly. tooth-colored restorative materials have been used for restoration of posterior teeth. Tooth-colored restoration for posterior teeth can be divided into three categories: 1) the direct techniques that can be made in a single appointment and are an intraoral procedure utilizing composites: 2) the semidirect techniques that require both an intraoral and an extraoral procedure and are luted chairside utilizing composites: and 3) the indirect techniques that require several appointments and the expertise of a dental technician working with either composites or ceramics. But, resin restoration has inherent drawbacks of microleakage. polymerization shrinkage, thermal cycling problems. and wear in stress-bearing areas. On the other hand, Ceramic restorations have many advantages over resin restorations. Ceramic inlays are reported to have less leakage than resin restoration and to fit better. although marginal fidelity depends on technique and is laboratory dependent. Adhesion of luting resin is more reliable and durable to etched ceramic material than to treated resin composite. In view of color matching, periodontal health. resistance to abrasion, ceramic restoration is superior to resin restorationl. Materials which have been used for the fabrication of ceramic restorations are various. Conventional powder slurry ceramics are also available. Castable ceramics are produced by centrifugal casting of heat-treated glass ceramics. and machinable ceramics are feldspathic porcelains or cast glass ceramics which are milled using a CAD/CAM apparatus to produce inlays (for example, Cered. They may also be copy milled using the Celay apparatus. Pressable ceramics are produced from feldspathic porcelain which is supplied in ingot form and heated and moulded under pressure to produce a restoration. Infiltrated ceramics are another class of material which are available for use as ceramic inlays. An example is $In-Ceram^{\circledR}$(Vident. California, USA) which consists of a porous aluminum oxide or spinell core infiltrated with glass and subsequently veneered with feldspathic porcelain. In the 1980s. the development of compatible refractory materials made fabrication easier. and the development of adhesive resin cements greatly improved clinical success rates. This case report presents esthetic ceramic inlays for posterior teeth.teeth.

• 대한치과보철학회지
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• 제59권1호
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• pp.71-78
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• 2021

완전무치악 환자한테 처음으로 시도되었던 임플란트 보철치료는 현재는 단일치아 상실된 경우까지 그 활용범위가 넓어졌으며, 임플란트 보철치료는 현대 치과에서는 거의 필수적인 치료방법으로 자리매김 하였다. 임플란트 보철물을 제작하는데 사용되는 재료도 초기에 비해 다양해졌는데, 그 중 하나가 고기능성 폴리머의 적용이다. 예전부터 의과에서 많이 사용되어 왔던 고기능성 폴리머를 치과에서도 시도하는 빈도가 점점 늘어나고 있다. 이에 고기능성 폴리머를 구치부 임플란트 지대주로 사용한 3가지 증례를 보고하고자 한다. 첫번째 증례는 하악 좌측 제2소구치가 상실된 부위에 PEKK 지대주 및 PFG 크라운(시멘트-나사-유지형)을 제작, 장착하였으며, 두번째 증례는 상실된 상악 좌측 제1대구치 부위에 PEKK 지대주 및 monolithic zirconia 크라운(시멘트-나사-유지형)을 제작, 장착하였으며, 마지막 증례는 상악 우측 제1,2 대구치 상실부위에 PEKK 지대주 및 splinted PFM 크라운(시멘트-나사-유지형)을 제작하여 장착하였다. 4년의 추적 관찰 결과 상기 환자 모두 심미적 및 기능적으로 만족스러운 결과를 얻었기에 증례를 보고하고자 한다.