Table 7 Existing crowns affected by caries or marginal gap that received replacement crowns
From: Reasons for placement and replacement of crowns in general dental practice
Number of surfaces affected by caries/marginal gap | n (%) | Distribution of surfaces affected by caries/marginal gap | n (%) | Size of caries/marginal gap | n (%) | Principal reason why repair would not have been possible | n (%) |
|---|---|---|---|---|---|---|---|
1 | 63 (69) | Buccal | 43 (33) | Less than width of an explorer | 7 (8) | Marginal defect too large | 63 (26) |
2 | 21 (23) | Distal | 26 (20) | Width of an explorer | 18 (20) | Repair unlikely to meet needs/expectations of the patient | 63 (26) |
3 | 3 (3) | Mesial | 23 (17) | Width of a William's probe | 12 (13) | Crown lost | 32 (13) |
4 | 0 (0) | Occlusal/Incisal | 22 (17) | Width of a BPE probe tip | 10 (11) | Shape/shade of crown flawed | 23 (10) |
5 | 1 (1) | Labial/Palatal | 3 (2) | Greater than the width of a BPE probe tip | 39 (41) | ||
Data not reported | 4 (4) | Data not reported | 15 (11) | Data not reported | 6 (7) | Data not reported | 60 (24) |
Total | 92 (100) | Total | 134 (100) | Total | 92 (100) | Total | 241 (100) |
