Resumo Este estudo teve como objetivo comparar a sobrevida, por cinco anos, de dentes reimplantados que seguiram as diretrizes de 2012 ou 2020 da International Association of Dental Traumatology (IADT). Sessenta e dois dentes permanentes reimplantados foram avaliados retrospectivamente (IADT 2012, n = 45; IADT 2020, n = 17). Cinco anos após o reimplante, foram realizados exames clínicos e radiográficos. Foi considerado um nível de significância de 95% para avaliar os desfechos. Trinta e um dentes (50,0%) permaneceram em seus alvéolos e 31 (50,0%) foram perdidos por reabsorção radicular externa. Dos 25 (40,3%) dentes reimplantados em uma hora, 16 (64,0%) permaneceram em seus alvéolos e 9 (36,0%) foram perdidos. Vinte e dois (71,0%) de todos os 31 dentes perdidos tiveram um tempo extra-alveolar superior a uma hora. Doze dentes permaneceram em seus alvéolos sem reabsorção: 8 (66,7%) foram reimplantados em uma hora, 2 (16,7%) seguiram a IADT de 2012 e 2 (16,7%) as diretrizes da IADT de 2020 para reimplante tardio. Houve diferença significativa (p<0,05) no tempo extra-alveolar (< uma hora), mas sem diferença entre as diretrizes no reimplante tardio (p > 0,05). Dentes reimplantados seguindo as diretrizes de 2012 ou 2020 da IADT, tiveram taxas de sucesso semelhantes. O tempo extra-alveolar inferior a uma hora demonstrou ser importante para manter o dente permanente em seu alvéolo. sobrevida 201 202 IADT. . (IADT) 45 17. 17 17) radiográficos 95 desfechos 50,0% 500 50 0 (50,0% 3 externa 40,3% 403 40 (40,3% 1 64,0% 640 64 (64,0% 36,0% 360 36 (36,0% 71,0% 710 71 (71,0% extraalveolar extra alveolar 66,7% 667 66 7 (66,7% 16,7% 167 (16,7% p<0,05 p005 p 05 (p<0,05 < ( , hora) 0,05. 005 0,05 0,05) semelhantes alvéolo 20 4 50,0 5 (50,0 40,3 (40,3 64,0 6 (64,0 36,0 (36,0 71,0 (71,0 66,7 (66,7 16,7 (16,7 p<0,0 p00 (p<0,0 00 0,0 50, (50, 40, (40, 64, (64, 36, (36, 71, (71, 66, (66, 16, (16, p<0, p0 (p<0, 0, (50 (40 (64 (36 (71 (66 (16 p<0 (p<0 (5 (4 (6 (3 (7 (1 p< (p<
Abstract This study aimed to compare the survival of replanted teeth that followed the 2012 or the 2020 International Association of Dental Traumatology (IADT) guidelines. Sixty-two permanent replanted teeth were retrospectively assessed (IADT 2012, n = 45; IADT 2020, n = 17). Five years after replantation (from January 2017 to December 2021), clinical and radiographic examinations were performed. A significance level of 95% was considered to evaluate the outcomes. Thirty-one teeth (50.0%) remained in their sockets and 31 (50.0%) were lost due to external root resorption. Of the 25 (40.3%) teeth replanted within one hour, 16 (64.0%) remained in their sockets, and 9 (36.0%) were lost. Twenty-two (71.0%) of all 31 lost teeth had an extra-alveolar time of more than one hour. Twelve teeth remained in their sockets without resorption: 8 (66.7%) were replanted within one hour, 2 (16.7%) followed the 2012 IADT, and 2 (16.7%) the 2020 IADT guidelines for late replantation. There was a significant difference (p <0.05) in the extra-alveolar time (< one hour), but without difference between the guidelines in late replantation (p > 0.05). Replanted teeth following both, 2012 or 2020 IADT guidelines, have similar clinical outcomes. The extra-alveolar time of less than one hour was demonstrated to be important to keep the permanent tooth in its socket. 201 202 Sixtytwo Sixty two 45 17. 17 . 17) from 2021, 2021 , 2021) performed 95 outcomes Thirtyone Thirty 50.0% 500 50 0 (50.0% 3 resorption 40.3% 403 40 (40.3% 1 64.0% 640 64 (64.0% 36.0% 360 36 (36.0% Twentytwo Twenty 71.0% 710 71 (71.0% extraalveolar extra alveolar 66.7% 667 66 7 (66.7% 16.7% 167 (16.7% p <0.05 005 05 < ( hour) 0.05. 0.05 0.05) both socket 20 4 50.0 5 (50.0 40.3 (40.3 64.0 6 (64.0 36.0 (36.0 71.0 (71.0 66.7 (66.7 16.7 (16.7 <0.0 00 0.0 50. (50. 40. (40. 64. (64. 36. (36. 71. (71. 66. (66. 16. (16. <0. 0. (50 (40 (64 (36 (71 (66 (16 <0 (5 (4 (6 (3 (7 (1