Timpanoplastias II e III- Revisão de 10 anos Type II and type III timpanoplasties - A 10 year revision

AbstrA cts This study aims to assess the epidemiological and functional differences between Portmanns type II (T2) and III (T3) tympanoplasties trying to find functional predictors of success. Retrospective study of 171 patients undergoing a T2 or T3 surgery between 2000 and 2009. A total of 171 cases (119 T2 and 52 T3) were pooled. T2 had a preoperative air bone GAP (ABG) of 28.1+8.5dB and pure tone average (PTA) of 47.1±15.2dB, while T3 showed a 32.8±8.0dB ABG and a 55,9±16,4dB PTA (p<0.05). The average improvement was 9.8±13.8dB and 7.0±11.8dB for T2 and T3, respectively (p<0,05). Functional success was significantly different between T2(82%) and T3(63,5%,p<0,05). Our data suggests that the T2 have younger individuals and better preoperative ABG and PTA. Preoperative PTA is a predictor of functional success T2. Functional success is greater in T2 rather than T3.