Table A1.
Regarding the various restorations shown in Fig 1, numbers (row percent1) of respondents by category and their likelihood to recommend a crown
| Characteristic | Very Likely to Recommend Crown | Likely to Recommend Crown | Not Likely to Recommend Crown | Definitely Not Recommend Crown | Total | P Value |
|---|---|---|---|---|---|---|
|
| ||||||
| Figure 1A, an occlusal restoration | ||||||
|
| ||||||
| Gender | ||||||
| Male | 5 (0.4) | 24 (2) | 388 (30) | 865 (67) | 1282 | 0.23 |
| Female | 1 (0.2) | 9 (2) | 170 (35) | 302 (63) | 482 | |
| Total | 6 | 33 | 558 | 1167 | 1764 | |
|
| ||||||
| Years Since Dental School Graduation | 0.72 | |||||
| <10 | 1 (0.3) | 6 (2) | 91 (31) | 194 (66) | 292 | |
| 10–19 | 1 (0.3) | 9 (2) | 132 (36) | 225 (61) | 367 | |
| 20–29 | 2 (0.5) | 6 (2) | 120 (31) | 253 (66) | 381 | |
| 30+ | 2 (0.3) | 12 (2) | 220 (30) | 499 (68) | 733 | |
| Total | 6 | 33 | 563 | 1171 | 1773 | |
|
| ||||||
| Type of Practice | ||||||
| Owner of Private Practice | 5 (0.4) | 23 (2) | 433 (33) | 833 (64) | 1294 | 0.0009 |
| Associate in Priv. Practice | 0 | 6 (3) | 76 (37) | 125 (60) | 207 | |
| Health Partners2 | 0 | 0 | 6 (14) | 38 (86) | 44 | |
| Permanente2 | 0 | 0 | 17 (24) | 53 (76) | 70 | |
| Other Managed Care | 0 | 1 (10) | 0 | 9 (90) | 10 | |
| Public Health, Community | 0 | 2 (3) | 17 (27) | 45 (70) | 64 | |
| Federal Government | 0 | 0 | 5 (21) | 19 (79) | 24 | |
| Academic | 1 (2) | 0 | 4 (8) | 43 (90) | 48 | |
| Total | 6 | 32 | 558 | 1165 | 1761 | |
|
| ||||||
| Network Region3 | ||||||
| Western | 0 | 6 (2) | 90 (31) | 196 (67) | 292 | 0.04 |
| Midwest | 1 (0.5) | 2 (1) | 51 (28) | 126 (70) | 180 | |
| Southwest | 0 | 9 (3) | 120 (39) | 181 (58) | 310 | |
| South Central | 3 (2) | 6 (2) | 112 (34) | 209 (63) | 330 | |
| South Atlantic | 1 (0.3) | 7 (2) | 103 (32) | 216 (66) | 327 | |
| Northeast | 1 (0.3) | 3 (0.9) | 87 (26) | 246 (73) | 337 | |
| Total | 6 | 33 | 563 | 1174 | 1776 | |
|
| ||||||
| Time Commitment | ||||||
| Full time | 4 (0.3) | 30 (2) | 484 (32) | 989 (66) | 1507 | 0.11 |
| Part time (<32 hrs) | 2 (0.8) | 1 (0.4) | 74 (29) | 176 (70) | 253 | |
| Total | 6 | 31 | 558 | 1165 | 1760 | |
|
| ||||||
| Specialty Status | ||||||
| General Dentist | 6 (0.3) | 32 (2) | 551 (32) | 1129 (66) | 1718 | 0.37 |
| Specialist | 0 | 1 (2) | 12 (21) | 43 (77) | 56 | |
| Total | 6 | 33 | 563 | 1172 | 1774 | |
|
| ||||||
| Race | ||||||
| White | 6 (0.4) | 29 (2) | 461 (32) | 955 (66) | 1451 | 0.91 |
| Black/African-American | 0 | 1 (1) | 21 (27) | 55 (71) | 77 | |
| Asian | 0 | 3 (2) | 48 (30) | 109 (68) | 160 | |
| Other | 0 | 0 | 24 (34) | 46 (66) | 70 | |
| Total | 6 | 33 | 554 | 1165 | 1758 | |
|
| ||||||
| Figure 1B, a DO alloy | ||||||
|
| ||||||
| Gender | ||||||
| Male | 148 (12) | 463 (36) | 602 (47) | 67 (5) | 1280 | 0.51 |
| Female | 57 (12) | 168 (35) | 239 (50) | 18 (4) | 482 | |
| Total | 205 | 631 | 841 | 85 | 1762 | |
|
| ||||||
| Years Since Dental School Graduation | 0.20 | |||||
| <10 | 28 (10) | 101 (35) | 151 (52) | 11 (4) | 291 | |
| 10–19 | 39 (11) | 132 (36) | 185 (50) | 11 (3) | 367 | |
| 20–29 | 51 (13) | 129 (34) | 180 (47) | 22 (6) | 382 | |
| 30+ | 90 (12) | 275 (38) | 324 (44) | 42 (6) | 731 | |
| Total | 208 | 637 | 840 | 86 | 1771 | |
|
| ||||||
| Type of Practice | ||||||
| Owner of Private Practice | 167 (13) | 479 (37) | 592 (46) | 55 (4) | 1293 | <0.0001 |
| Associate in Priv. Practice | 30 (14) | 85 (41) | 85 (41) | 7 (3) | 207 | |
| Health Partners2 | 0 | 10 (23) | 27 (63) | 6 (14) | 43 | |
| Permanente2 | 1 (1) | 22 (31) | 43 (61) | 4 (6) | 70 | |
| Other Managed Care | 1 (10) | 2 (20) | 4 (40) | 3 (30) | 10 | |
| Public Health, Community | 4 (0.2) | 16 (1) | 40 (2) | 4 (0.2) | 64 | |
| Federal Government | 3 (12) | 8 (33) | 13 (54) | 0 | 24 | |
| Academic | 0 | 9 (19) | 32 (67) | 7 (16) | 48 | |
| Total | 206 | 631 | 836 | 86 | 1759 | |
|
| ||||||
| Network Region3 | ||||||
| Western | 37 (13) | 98 (34) | 145 (50) | 12 (4) | 292 | 0.0005 |
| Midwest | 16 (9) | 54 (30) | 96 (54) | 13 (7) | 179 | |
| Southwest | 51 (16) | 128 (41) | 124 (40) | 8 (3) | 311 | |
| South Central | 42 (13) | 127 (38) | 146 (42) | 15 (5) | 330 | |
| South Atlantic | 37 (11) | 125 (38) | 150 (46) | 14 (4) | 326 | |
| Northeast | 25 (7) | 105 (31) | 182 (54) | 24 (7) | 336 | |
| Total | 208 | 637 | 843 | 86 | 1774 | |
|
| ||||||
| Time Commitment | ||||||
| Full time | 177 (12) | 548 (36) | 709 (47) | 72 (5) | 1506 | 0.73 |
| Part time (<32 hrs) | 27 (11) | 85 (34) | 126 (50) | 14 (6) | 252 | |
| Total | 204 | 633 | 835 | 86 | 1758 | |
|
| ||||||
| Specialty Status | ||||||
| General Dentist | 205 (12) | 619 (36) | 810 (47) | 82 (5) | 1716 | 0.31 |
| Specialist | 3 (5) | 18 (32) | 31 (55) | 4 (7) | 56 | |
| Total | 208 | 637 | 841 | 86 | 1772 | |
|
| ||||||
| Race | 0.08 | |||||
| White | 176 (12) | 520 (36) | 678 (47) | 75 (5) | 1449 | |
| Black/African-American | 10 (13) | 32 (42) | 32 (42) | 3 (4) | 77 | |
| Asian | 16 (10) | 45 (28) | 92 (58) | 7 (4) | 160 | |
| Other | 6 (9) | 33 (47) | 31 (44) | 0 | 70 | |
| Total | 208 | 630 | 833 | 85 | 1756 | |
|
| ||||||
| Figure 1C, an MOD restoration | ||||||
|
| ||||||
| Gender | ||||||
| Male | 369 (29) | 457 (36) | 395 (31) | 60 (5) | 1281 | 0.06 |
| Female | 139 (29) | 196 (41) | 136 (28) | 12 (2) | 483 | |
| Total | 508 | 653 | 531 | 72 | 1764 | |
|
| ||||||
| Years Since Dental School Graduation | 0.001 | |||||
| <10 | 68 (23) | 120 (41) | 97 (33) | 7 (2) | 292 | |
| 10–19 | 114 (31) | 153 (42) | 93 (25) | 7 (2) | 367 | |
| 20–29 | 126 (33) | 132 (35) | 105 (27) | 19 (5) | 382 | |
| 30+ | 204 (28) | 252 (34) | 236 (32) | 40 (5) | 732 | |
| Total | 512 | 657 | 531 | 73 | 1773 | |
|
| ||||||
| Type of Practice | ||||||
| Owner of Private Practice | 408 (32) | 466 (36) | 366 (28) | 54 (4) | 1294 | <0.0001 |
| Associate in Priv. Practice | 60 (29) | 90 (43) | 53 (26) | 4 (2) | 207 | |
| Health Partners2 | 1 (2) | 15 (34) | 24 (55) | 4 (9) | 44 | |
| Permanente2 | 9 (13) | 36 (51) | 23 (33) | 2 (3) | 70 | |
| Other Managed Care | 1 (10) | 3 (30) | 5 (50) | 1 (10) | 10 | |
| Public Health, Community | 22 (34) | 18 (28) | 22 (34) | 2 (3) | 64 | |
| Federal Government | 1 (4) | 8 (33) | 14 (58) | 1 (4) | 24 | |
| Academic | 4 (8) | 17 (35) | 22 (46) | 5 (10) | 48 | |
| Total | 506 | 653 | 529 | 73 | 1761 | |
|
| ||||||
| Network Region3 | ||||||
| Western | 75 (26) | 126 (43) | 83 (28) | 8 (3) | 292 | 0.0008 |
| Midwest | 41 (23) | 61 (34) | 70 (39) | 8 (4) | 180 | |
| Southwest | 120 (39) | 105 (34) | 79 (25) | 7 (2) | 311 | |
| South Central | 104 (32) | 113 (34) | 96 (28) | 16 (5) | 329 | |
| South Atlantic | 92 (28) | 128 (39) | 93 (28) | 14 (4) | 327 | |
| Northeast | 81 (24) | 124 (37) | 112 (33) | 20 (6) | 337 | |
| Total | 513 | 657 | 533 | 73 | 1776 | |
|
| ||||||
| Time Commitment | ||||||
| Full time | 438 (29) | 562 (37) | 449 (30) | 58 (4) | 1507 | 0.39 |
| Part time (<32 hrs) | 68 (27) | 90 (36) | 80 (32) | 15 (6) | 253 | |
| Total | 506 | 652 | 529 | 73 | 1760 | |
|
| ||||||
| Specialty Status | ||||||
| General Dentist | 498 (29) | 642 (37) | 507 (30) | 71 (4) | 1718 | 0.17 |
| Specialist | 15 (27) | 15 (27) | 24 (43) | 56 (4) | 56 | |
| Total | 513 | 657 | 531 | 73 | 1774 | |
|
| ||||||
| Race | ||||||
| White | 413 (28) | 528 (36) | 444 (31) | 65 (4) | 1450 | 0.12 |
| Black/African-American | 30 (39) | 23 (30) | 23 (30) | 1 (1) | 77 | |
| Asian | 45 (28) | 69 (43) | 40 (25) | 7 (4) | 161 | |
| Other | 21 (30) | 32 (46) | 17 (24) | 0 | 70 | |
| Total | 509 | 652 | 524 | 73 | 1758 | |
|
| ||||||
| Figure 1D, an MOD alloy with a broken cusp | ||||||
|
| ||||||
| Gender | ||||||
| Male | 1129 (88) | 113 (9) | 28 (2) | 12 (1) | 1282 | 0.047 |
| Female | 406 (84) | 62 (13) | 13 (3) | 2 (0.4) | 483 | |
| Total | 1535 | 175 | 41 | 14 | 1765 | |
|
| ||||||
| Years Since Dental School Graduation | 0.20 | |||||
| <10 | 249 (85) | 36 (12) | 5 (2) | 2 (0.7) | 292 | |
| 10–19 | 320 (87) | 38 (10) | 7 (2) | 2 (0.6) | 367 | |
| 20–29 | 319 (84) | 45 (12) | 14 (4) | 4 (1) | 382 | |
| 30+ | 655 (90) | 57 (8) | 15 (2) | 6 (0.8) | 733 | |
| Total | 1543 | 176 | 41 | 14 | 1774 | |
|
| ||||||
| Type of Practice | ||||||
| Owner of Private Practice | 1144 (88) | 110 (8) | 30 (2) | 11 (0.9) | 1295 | <0.0001 |
| Associate in Priv. Practice | 182 (88) | 19 (9) | 5 (2) | 1 (0.4) | 207 | |
| Health Partners2 | 25 (57) | 15 (34) | 4 (9) | 0 | 44 | |
| Permanente2 | 61 (87) | 7 (10) | 1 (1) | 1 (1) | 70 | |
| Other Managed Care | 7 (70) | 3 (30) | 0 | 0 | 10 | |
| Public Health, Community | 55 (86) | 8 (13) | 1 (2) | 0 | 64 | |
| Federal Government | 21 (88) | 3 (13) | 0 | 0 | 24 | |
| Academic | 37 (77) | 10 (21) | 0 | 1 (2) | 48 | |
| Total | 1532 | 175 | 41 | 14 | 1762 | |
|
| ||||||
| Network Region3 | ||||||
| Western | 260 (89) | 26 (9) | 5 (2) | 1 (0.3) | 292 | 0.25 |
| Midwest | 148 (82) | 25 (14) | 5 (3) | 2 (1) | 180 | |
| Southwest | 275 (88) | 26 (8) | 8 (3) | 2 (0.6) | 311 | |
| South Central | 283 (86) | 36 (11) | 9 (3) | 2 (0.6) | 330 | |
| South Atlantic | 297 (91) | 19 (6) | 8 (2) | 3 (0.9) | 327 | |
| Northeast | 283 (84) | 44 (13) | 6 (2) | 4 (1) | 337 | |
| Total | 1546 | 176 | 41 | 14 | 1777 | |
|
| ||||||
| Time Commitment | ||||||
| Full time | 1313 (87) | 147 (10) | 36 (2) | 12 (0.8) | 1508 | 0.84 |
| Part time (<32 hrs) | 217 (86) | 29 (11) | 5 (2) | 2 (0.8) | 253 | |
| Total | 1530 | 176 | 41 | 14 | 1761 | |
|
| ||||||
| Specialty Status | ||||||
| General Dentist | 1503 (87) | 166 (10) | 37 (2) | 13 (0.8) | 1719 | 0.02 |
| Specialist | 42 (75) | 9 (16) | 4 (7) | 1 (2) | 56 | |
| Total | 1545 | 175 | 41 | 14 | 1775 | |
|
| ||||||
| Race | ||||||
| White | 1264 (87) | 140 (10) | 36 (2) | 11 (0.7) | 1451 | 0.84 |
| Black/African-American | 67 (87) | 9 (12) | 0 | 1 (1.3) | 77 | |
| Asian | 138 (86) | 18 (11) | 4 (2) | 1 (0.6) | 70 | |
| Other | 64 (91) | 4 (6) | 1 (1) | 1 (1) | 161 | |
| Total | 1533 | 171 | 41 | 14 | 1759 | |
1
Due to missing values, not all rows add to 100%, and not all totals sum to 1,777.
2
Either HealthPartners Dental Group in greater Minneapolis, MN or Permanente Dental Associates in greater Portland, OR.
3
Reported on Enrollment Questionnaire as the state, subsequently categorized into one of the six regions of the network.