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Table 2 Association between the responses to the knowledge and practice aspects about the management of ETT requires post-placement with the specialty of a sample of Saudi dentists (n = 203)

From: Do dentists practice what they know? A cross-sectional study on the agreement between dentists' knowledge and practice in restoring endodontically treated teeth

Aspects Knowledge n (%) Χ2-value p value Practice n (%) Χ2-value p value
Technical management of ETT GDP Resto Endo GDP Resto Endo
1. The best clinician to prepare the PS?     19.49 0.001*     4.99 0.287
The clinician who performed the root canal treatment 51(42.5) 44(64.7) 14(93.3)    26(21.7) 18(26.5) 1(6.7)   
The clinician who will fabricate the post 52(43.3) 16(23.5) 1(6.7)    75(62.5) 40(58.8) 9(60.0)   
Anyone; they are both equally qualified 17(14.2) 8(11.8) 0(0)    19(15.8) 10(14.7) 5(33.3   
2. Routine placement of a rubber dam during PSP?     1.97 0.374     27.62 < 0.001*
Yes 81(67.5) 42(61.8) 12(80.0)    24(20.0) 13(19.1) 12(80.0)   
No 39(32.5) 26(38.2) 3(20.0)    96(80.0) 55(80.9) 3(20.0)   
3. Recommended PSP technique?           
Rotary instruments (Gates Glidden, Peeso Reamers) 80(66.7) 42(61.8) 7(46.7) 35.91 < 0.001* 90(75.0) 59(86.8) 7(50.0) 37.3 < 0.001*
Post drills only 28(23.3) 6(8.8) 0    21(17.5) 6(8.8) 1(7.1)   
Heated endodontic instruments 2(1.7) 15(22.1) 4(26.7)    1(0.8) 2(2.9) 4(28.6)   
Other (Chemical Solvents and others) 10(8.4) 5(7.3) 4(26.7)    8(6.7) 1(1.5) 2(14.2)   
4. Minimum acceptable amount of gutta-percha remaining in the prepared canal?     2.98 0.562     0.92 0.922
 ≤ 3 mm 63(52.5) 33(48.5) 5(33.3)    13(10.8) 6(8.8) 1(6.7)   
4–5 mm 53(44.2) 33(48.5) 10(66.7)    98(81.7) 56(82.4) 12(80.0)   
More than 5 mm 4(3.3) 2(2.9) 0    9(7.5) 6(8.8) 2(13.3)   
5. Acceptable gap, if any, between the gutta-percha and the post?     3.85 0.427     3.67 0.453
No gap between the gutta-percha and the post 43(35.8) 33(48.5) 7(46.7)    47(39.2) 27(39.7) 7(46.7)   
A gap of 0–2 mm 71(59.2) 33(48.5) 8(53.3)    70(58.3) 36(52.9) 8(53.3)   
A gap of > 2 mm 6(5.0) 2(3.0) 0    3(2.5) 5(7.4) 0   
10. Placement of temporary crown over cemented indirect post and core for coronal seal     0.24 0.886     21.12 < 0.001*
Yes 89(74.2) 51(75.0) 12(80.0)    97(80.8) 62(91.2) 9(60)   
No 31(25.8) 17(25.0) 3(20.0)    23(19.2) 6(8.8) 6(40)   
  1. GDP general dental practitioner, Resto. restorative specialist, Endo. endodontist, PSP post space preparation, ETT endodontically treated teeth
  2. *Statistically significant at p < 0.05