Considerations in measurement of marginal fit

Evaluation of the marginal fit of three margin designs of resin composite crowns using CAD/CAM

“…Lack of adequate fit is potentially detrimental to both the tooth and the supporting periodontal tissues, due to cement solubility or plaque retention. 17 However, the definitions of marginal fit vary considerably among investigators and often the same term is used to refer to different measurements, or different terms are used to refer to the samemeasurements. 17 In the present study the marginal gap was determined according to terminology previously reported by…”

“…Holmes et al 17,23 Overcontours or undercontours of the crowns margins were not evaluated in this study.…”

“…It was determined according to terminology previously reported by Holmes et al. 17 as the vertical distance from the internal surface of the crown to the prepared tooth surface close to the preparation finish line (Fig. 3).…”

Die spacer thickness reproduction for central incisor crown fabrication with combined computer-aided design and 3D printing technology: An in vitro study

“…Holmes et al 36 defined the internal gap as the perpendicular measurement from the internal surface of the casting to the axial wall of the preparation; the same measurement at the margin was referred to as the marginal gap. The internal gap between the printed resin coping and stone die for each sectioned specimen was measured at 5 defined locations: (A) facial chamfer, (B) facial midaxial, (C) incisal, (D) lingual midaxial, and (E) lingual chamfer (Fig.…”

Evaluation of Marginal Gap of Fixed Dental Prostheses Fabricated by Soft Metal Material Using Dental CAD/CAM

“…2), 한 시편당 4군데, 두 그룹의 시편 20 개를 총 80회에 걸쳐 변연 간격을 측정하였다. 모든 측정부 위는 지대치 모형으로부터 시편까지 수직적인 거리로 변연 간격을 정의하며 측정하였다 9,10) (Fig. 3).…”