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>Determining the Margin of Safety for Damaging the Sphenoid Sinus with Nasal Septum Osteotome during Le Fort I Surgery in Young Adults
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Determining the Margin of Safety for Damaging the Sphenoid Sinus with Nasal Septum Osteotome during Le Fort I Surgery in Young Adults
Nasal septum (Obwegeser) osteotome is a basic instrument used for separating the nasal septum and maxilla during Le Fort I osteotomy. If this instrument is placed too high or tilted into the nasal cavity, sphenoid sinus and various adjacent vital structures may be damaged and serious bleeding, neurological complications, or blindness or even death may occur. The aim of this study is to determine the margin of safety for damaging the sphenoid sinus and the adjacent structures with nasal septum osteotome in the young adults: 49 male and 51 female patients between 15 and 25 ages who required a Cone Beam Computed Tomography (CBCT) examination as part of their routine examination. In the study sample consisting of CBCT images, the aimed surgical line, the line between spina nasalis anterior and vomer and the base of sphenoid sinus (undesired line), and tilt angle between surgical and undesirable lines were measured. As the primary outcome of this study, margin of safety for damaging the sphenoid sinus and adjacent vital structures with nasal septum osteotome during Le Fort surgeries in young adults recommended as 5 mm and 120. For this reason the importance of planning with preoperative CBCT before Le Fort I osteotomies has been revealed.
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机译:鼻中隔(Obwegeser)骨凿是在Le Fort I截骨术中用于分离鼻中隔和上颌骨的基本器械。如果将本仪器放置得过高或倾斜到鼻腔中,可能会损坏蝶窦和各种相邻的重要结构,并可能导致严重的出血,神经系统并发症或失明甚至死亡。这项研究的目的是确定在年轻人中破坏蝶窦和鼻中隔骨膜切开术的邻近结构的安全范围:49位男性和51位女性,年龄在15至25岁之间,需要进行锥形束计算机断层扫描(CBCT) )作为常规检查的一部分。在由CBCT图像组成的研究样本中,测量了目标手术线,鼻窦前和犁骨之间的线以及蝶窦的根部(不需要的线)以及手术线与不良线之间的倾斜角。作为这项研究的主要结果,建议在青壮年Le Fort手术中用鼻中隔断骨刀破坏蝶窦和邻近的重要结构的安全范围为5mm和12 0 sup>。因此,已经揭示了在Le Fort I截骨术前进行术前CBCT计划的重要性。
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