and substantial tooth reduction is often required. The crown must be sufficiently thick to hide the metal substructure and the opacious porcelain used to mask this alloy. When preparing a tooth, a systematic and organized approach helps to ensure the prep is correctly shaped. ...
porcelain-fused-to-metal crown (PFM) 前言 (一) 定义 烤瓷熔附金属全冠也称金属烤瓷全冠,是 一种由低熔瓷粉在真空条件下熔附到金属基底 冠上的金-瓷复合结构的修复体。 烤瓷熔附金属全冠 是先用合金制成金属基 底(metal coping,金 属帽状冠),然后在其 表面覆盖与天然牙相似 的低熔瓷粉,在真空高 温烤瓷...
PFM crowns were fabricated, cemented with zinc phosphate, and the force to displace each crown was measured with a tensile-testing machine before and after endodontic access preparations. The endodontic access area, crown preparation axial wall, and preparation surface area was measured for each ...
2.Objective To study the histologic effect of Green or on the vital pulp at different time after porcelain fused to metal(PFM) crown preparation, to observe the immunolocalization of heat shock protein70(HSP70) in the pulp, and to discuss the influence of Green or on the expression of HSP70...
Objective To study the histologic effect of Green or on the vital pulp at different time after porcelain fused to metal(PFM) crown preparation, to observe the immunolocalization of heat shock protein70(HSP70) in the pulp, and to discuss the influence of Green or on the expression of HSP70 by...
semi-precious, or high-noble metals. With the proper maintenance, such crowns can last for many years, in some cases patients can successfully maintain their PFM crowns for decades. With sub-gingival margin preparation and good oral hygiene; PFM restoration can even be a good cosmetic choice. ...
Objective To investigate the effect of labial periodontal ofPFM crownafter clinical tooth preparation used by dental magnifier. 目的本研究旨在探讨使用牙科放大镜临床牙体预备后对金瓷冠唇侧牙周状况的影响。 2. Objective:This study was to evaluate marginal fit of all-porcelain labial margin ofPFM crown...
Objective: To investigate the effect of labial marginal fit of PFM crown after clinical tooth preparation by dental magnifier.Methods: 20 orthodontic patients who would be extracted the bilateral maxillary first premolars were randomly selected.Total 40 teeth were divided into two groups: experimental ...
pfm、烤塑、瓷冠 烤瓷熔附金属全冠 porcelain-fused-to-metalcrown（PFM）（一）定义 烤瓷熔附金属全冠也称金属烤瓷全冠，是一种由低熔瓷粉在真空条件下熔附到金属基底冠上的金-瓷复合结构的修复体。烤瓷熔附金属全•冠是先用合金制成金属基底（metalcoping，金属帽状冠），然后在其表面覆盖与天然牙相似的...
pfm、烤塑、瓷冠 烤瓷熔附金属全冠 porcelain-fused-to-metalcrown（PFM）（一）定义 烤瓷熔附金属全冠也称金属烤瓷全冠，是一种由低熔瓷粉在真空条件下熔附到金属基底冠上的金-瓷复合结构的修复体。烤瓷熔附金属全•冠是先用合金制成金属基底（metalcoping，金属帽状冠），然后在其表面覆盖与天然牙相似的...