Özet:

Purpose: The purpose of this study is to evaluate the prevalence of lingual perforation caused by the implants placed on conic radiated computer tomography (KIBT) images using a computer environment planning program to the non-dental mandibular molar and premolar areas and to determine the relationship between the morphological structure of the cretin and the risk of perforation of the lingual plate.Tools and Methods: KIBT image in the archive of the Faculty of Dental Medicine of İzmir Katip Çelebi University scaned the tomographic images of 543 patients taken and on the images of 107 patients that meet the inclusion criteria, 179 virtual implants were placed using the Simplant implant planning program.®The circuits were divided into 3 groups, P type, C type and U type. In the panoramic radiography, the lengths of the dental implants calculated to be 2 mm away from the inferior alveals canals were assessed the relationship with the lingual bone. Results: The majority of perforations occur in Lingual in U-type cries (87.5%) while the risk of perforation has increased after 8 mm length. Perforation was observed in four (8.3%) implants in C-type cries, while lingual perforation was observed in only two (4.2%) patients with a length of 14mm in P-type cries. Results: The results of this study reveal the value of KIBT once again in implant applications, assessing the neighbourhood of the area to the anatomical formations to the osteotomy. The measurement of the distance from the bottom neck to the channels is a routine preparation made before implant surgery. Furthermore, the evaluation of the anatomical structure of the mandibula in the sagittal plane is not possible if this is not done during the surgery, the examination of the cretal morphology with palpation is important for the prevention of complications that may develop during and after the surgery. Keywords: the lower spine, dental implant, conic radiated computer tomography, sublingual bleeding.

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