Journal of Prevention and Treatment for Stomatological Diseases ›› 2017, Vol. 25 ›› Issue (8): 530-532.doi: 10.12016/j.issn.2096-1456.2017.08.012

• Prevention and Treatment Practice • Previous Articles     Next Articles

Influence of different cement spaces on marginal adaptation of CAD/CAM inlay

Xiantao ZENG(), Xinhui YAO, Hongwen LI(), Xiaorui GENG   

  1. Department of Stomatology,Otorhinolaryngology Hospital of Longgang District Shenzhen 518172 China
  • Received:2017-03-21 Revised:2017-04-15 Online:2017-08-20 Published:2018-09-03

Abstract:

Objective To explore the influence of different cement spaces on the marginal adaptation of CAD/CAM zirconia inlay. Methods 30 teeth extracted for orthodontic purpose were selected and divided into 3 groups (Group A 10 μm, Group B 30 μm, Group C 50 μm). The marginal spaces of inlays were recorded by the light-body Silicone impression material, and measured by microscope. The data were analyzed by SPSS 13.0. Results All the inlays fitted very well and all the marginal spaces were less than 120 μm. The shoulder of Group A was statistically lower than Group B and Group C (P < 0.05). The axial surface of Group B was statistically lower than Group C (P < 0.05). Conclusions CEREC zirconia inlay is satisfactory when the cement space is between 10-50 μm.

Key words: Binder gap, CAD/CAM inlay, Marginal adaptation, Optical impression, CEREC system

CLC Number: 

  • R783.3

Table 1

Space measurements at different positions in group A"

部位 n x ± s (μm) 95%可信区间(μm)
450 31.02 ± 4.28 30.63~31.42
肩台 300 68.48 ± 7.29 67.62~69.28
轴面 150 89.48 ± 19.22 86.18~92.53
合计 900 53.25 ± 1.03 53.16~53.32

Table 2

Space measurements at different positions in group B"

部位 n x ± s (μm) 95%可信区间(μm)
450 30.38 ± 3.63 30.06~30.78
肩台 300 77.48 ± 8.30 76.49~78.41
轴面 150 74.32 ± 30.41 69.38~79.16
合计 900 53.40 ± 1.960 53.26~53.57

Table 3

Space measurements at different positions in group C"

部位 n x ± s (μm) 95 %可信区间(μm)
450 30.73 ± 4.33 30.31~31.11
肩台 300 79.30 ± 8.22 78.82~79.74
轴面 150 82.39 ± 21.30 78.68~85.76
合计 900 55.53 ± 1.34 55.42~55.63
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