Research Information System
Thesis Type: Doctorate
Institution Of The Thesis: Gazi University, Turkey
Approval Date: 2015
Thesis Language: Turkish
Student: Mustafa Gümüşok
Supervisor: CEMİLE ÖZLEM ÜÇOK
Abstract:Dental implants are highly widespread nowadays and they are routinely used in oral rehabilitation. On the other hand, they present with some troublesome complications for both patient and clinicians, such as hemorrhagic and neurosensory disorders. To identify the localizations and variations of anatomic structures through radiological imaging techniques before the application of implant and to do planning according to these images are among the basic principles for preventing these complications. The interforaminal region of the mandible has been considered to be a safe region for many years. However, this region has important anatomic structures, which are subject to complications, including incisive canal, lingual foramen, and vascular canals, lingual artery, submental artery, and mylohyoid artery. During surgical procedures, such as application of implant, performed in this region, severe bleeding in the floor of the mouth can occur in association with lingual cortex perforation, sublingual artery, or submental artery injuries. It has been reported that hematomas encountered during implant application can lead to life threatening outcomes by lifting up the tongue and obstructing the airway. In this thesis study, it was aimed to reveal the presence of vascular canals with lingual foramen localized on the lingual surface of the mandibular symphysis through mandibular cone beam volumetric tomography images of Turkish society, to detect their incidence rates and anatomic features such as localization and length by the means of cone-beam computed tomography, and to contribute to literature by investigating the relationship between lingual vascular canals and incisive canal. Cone-beam volumetric tomography images of the mandible were retrospectively evaluated in 463 patients. Similar to other studies, at least one MLF adjacent to the superior, inferior, or lateral aspects of the genial tubercles in the mandibular interforaminal regions was detected in all patients. While at least one MLF was found in the midline of the mandible at the incidence rate of 98%, at least one 1MLF was also seen on the right and left of the midline, as right-1MLF and left-1MLF, at the rate of 54%. The number of MLFs in the midline of the mandible ranged from one to four and it was found to be two with the frequency rate of 52%. It was observed that the lengths of sMLF, iMLF, right-lMLF and vascular canal were higher in men than in women. The lMLF was most frequently seen in the region of the first premolar tooth. Moreover, it was revealed that all of lMLFs anastomosed through the mandibular incisive canal only at the rate of 46%. In comparison of our results to those of other studies with different populations, it can be suggested that these variations are not uncommon conditions for Turkish population. In the light of these findings, cone beam computed tomography systems are recommended in this region for successful imaging of MLF and vascular canals before surgical procedures that will be applied in the interforaminal region.