Table 2.
Number of restorations replaced and repaired by all dentists (n=8,186), by original dentist (n=1,920), and not by original dentist (n=6,266) according to tooth type, material of the original restoration, arch location, number of surfaces, reason for defect, and number of defective restorations per patient.*
| Characteristics | All dentists n=8,186 |
Original dentist n=1,920 |
Not original dentist n=6,226 |
|||
|---|---|---|---|---|---|---|
| Tooth type | Replaced n (%) |
Repaired n (%) |
Replaced n (%) | Repaired n (%) | Replaced n (%) | Repaired n (%) |
| Molar tooth (n=4,569) | 3,284 (72) | 1,285 (28) | 599 (61) | 383 (39) | 2,685 (75) | 902 (25) |
| Premolar, anterior (n=3,617) | 2,747 (76) | 870 (24) | 658 (70) | 280 (30) | 2,089 (78) | 590 (22) |
| Material | ||||||
| Amalgam (n=2,155) | 1,212 (56) | 943 (44) | 570 (72) | 227 (28) | 3,212 (82) | 716 (18) |
| Not amalgam (n=6,031) | 4,819 (65) | 1,212 (35) | 687 (61) | 436 (39) | 1,562 (67) | 776 (33) |
| Arch location | ||||||
| Upper arch (n=4,588) | 3,372 (74) | 1,216 (26) | 732 (67) | 360 (33) | 2,640 (75) | 856 (25) |
| Lower arch (n=3,598) | 2,659 (74) | 939 (26) | 525 (46) | 606 (54) | 2,134 (77) | 636 (23) |
| Surface | ||||||
| Single surface (n=1,822) | 1,246 (69) | 576 (31) | 242 (61) | 157 (39) | 1,004 (71) | 419 (29) |
| Two surfaces (n=2,913) | 2,288 (79) | 625 (21) | 459 (69) | 202 (31) | 1,829 (81) | 423 (19) |
| Three surfaces (n=2,033) | 1,400 (70) | 633 (30) | 302 (61) | 192 (39) | 1,108 (72) | 431 (28) |
| Four more surfaces (n=1,418) | 1,006 (71) | 412 (29) | 254 (69) | 112 (31) | 752 (72) | 300 (28) |
| Reason | ||||||
| Fracture reason for defect (n=2,484) | 1,845 (74) | 639 (26) | 443 (68) | 200 (32) | 1,402 (76) | 439 (24) |
| Another reason for defect (n=5,702) | 4,186 (63) | 1,516 (27) | 814 (64) | 463 (36) | 3,372 (76) | 1,053 (24) |
| Number of defective restoration | ||||||
| 1 defective restoration (n=4,645) | 3,445 (74) | 1,200 (26) | 761 (66) | 392 (34) | 2,684 (77) | 808 (23) |
| 2 defective restorations (n=2,250) | 1,615 (72) | 635 (28) | 312 (66) | 162 (34) | 1,303 (74) | 473 (26) |
| 3–4 defective restorations (n=1,291) | 971 (75) | 320 (25) | 184 (63) | 109 (37) | 787 (79) | 211 (21) |
*
because the numbers in this table differ from those in Table 1 (e.g., 2,147 in Table 1 for “dentist placed the original restoration” compared to 1,920 in Table 2).