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Table 2 Etiology of tooth extraction

From: Immediate implant placement following tooth extraction with simultaneous lateral sinus augmentation: a retrospective clinical study after at least 1 year of loading

   Group  
Etiology Overall (n = 35) 1-Stage (non-submerged) (n = 17) 2-Stage (submerged) (n = 18) p
Periodontal problem 15 (42.9) 6 (35.3) 9 (50.0) .3801
Tooth problem 14 (40.0) 8 (47.1) 6 (33.3) .4071
 Caries 8 (57.1) 3 (37.5) 5 (83.3) .1382
 Root rest 5 (35.7) 5 (62.5) 0 (0.0) .0312
 Tooth fracture 1 (7.1) 0 (0.0) 1 (16.7) .4292
Combined periodontal and tooth problem 6 (17.1) 3 (17.6) 3 (16.7) 1.0002
  1. 1P values were derived from chi-square test
  2. 2P values were derived from Fisher’s exact test
  3. Shapiro-Wilk’s test was employed for test of normality assumption