Correlação entre as medidas lineares em radiografias panorâmicas e tomografias computadorizadas cone beam associadas ao seio maxilar / Correlation between linear measurements of panoramic radiographs and cone beam computed tomography images of the maxillary sinus
Correlacionar medidas lineares entre radiografias panorâmicas digitais (DPan) e tomografias computadorizadas cone beam (TCcb) na região do seio maxilar.
Método:
Foram selecionados exames aos pares de 71 sítios, 37 do lado direito e 34 do lado esquerdo, das radiografias panorâmicas digitais e suas correspondentes tomografias computadorizadas cone beam. As radiografias panorâmicas foram obtidas por meio do aparelhoOrthopantomograph® e foram analisadas por meio do software Image Tool v.3.0. As tomografias computadorizadas cone beam foram obtidas pelo tomógrafo i-CAT e analisadas pelo software Dental Slice. As mensurações foram realizadas por medidas lineares da distância da cortical inferior do seio maxilar até a cúspide incisal mais pronunciada do molar.
Seventy-one paired site exams were selected, 37 from the right side and 34 from the left side, on digital panoramic radiographs and their corresponding CBCT images. The panoramic radiographs were obtained by the Orthopantomograph®evice and analyzed by the Image Tool v.3.0 software. The CBCT images were obtained by the i-CAT tomograph and analyzed by the Dental Slice software. Linear measurements of the distance between the lower cortical of the maxillary sinus to the sharpest molar cusp.
Results:
Comparison of the measurements revealed a moderate agreement and the values were significantly higher in the measurements on the compensated digital panoramic radiographs (p<0.05) with 1.75 to 2.15 mm (8 to 9%) magnification, compared with the CBCT images.
Conclusion:
It may be concluded that when panoramic radiographs are used in the surgical planning for dental implants, a safety margin of 2.5 mm (10.5%) should be added in the maxillary sinus area after compensating for image magnification...