scholarly journals Evaluation of risk of injury to the inferior alveolar nerve with classical sagittal split osteotomy technique and proposed alternative surgical techniques using computer-assisted surgery

2013 ◽  
Vol 69 (1) ◽  
pp. 60
Author(s):  
Rohit Sharma ◽  
Dinesh Chaudhary
2016 ◽  
Vol 10 (4) ◽  
Author(s):  
Erol Cansiz ◽  
Fatih Turan ◽  
Yunus Ziya Arslan

Mandibular sagittal split osteotomy (SSO) is an operation performed for the correction of mandibular deformities. In this operation, sharp rotary tools are used during osteotomies and this can induce some complications. For example, if the inferior alveolar nerve is damaged, paralysis of the teeth, the lateral side of the tongue, and the corner of the lip can occur. To decrease the occurrence of such possible complications, we designed and manufactured a novel computer-assisted, patient-specific SSO guide and soft tissue retractor in our previous study. And, we first tested this apparatus on a cadaveric bone in vitro. Now, in this study, a surgical application of the instrument, which was designed and manufactured according to the requirements of the mandibular sagittal split osteotomies, was performed. This paper gives and discusses the results obtained from in vivo application of the apparatus.


2016 ◽  
Vol 2016 ◽  
pp. 1-3
Author(s):  
Erol Cansiz ◽  
Sabri Cemil Isler ◽  
B. Alper Gultekin

Mandibular third molars are the most common impacted teeth. Mandibular first and second molars do not share the same frequency of occurrence. In rare cases the occlusal surfaces of impacted molars are united by the same follicular space and the roots pointing in opposite direction; these are called kissing molars. In some cases, a supernumerary fourth molar can be seen as unerupted and, in this case, such a supernumerary, deeply impacted fourth molar is seen neighboring kissing molars. The extraction of deeply impacted wisdom molars from the mandible may necessitate excessive bone removal and it causes complications such as damage to the inferior alveolar nerve and iatrogenic fractures of the mandible. This case report describes the use of the sagittal split osteotomy technique to avoid extensive bone removal and protect the inferior alveolar nerve during surgical extruction of multiple impacted teeth.


Author(s):  
Amir Jalal Abbas ◽  
Abbas Azari ◽  
Mehrnoush Momeni ◽  
Ahmad Reza Shamshiri ◽  
Shimelis Megersa Gema

Background: The surgical guide enabled the surgeon to accurately perform osteotomy, mini- mize iatrogenic injury to vital structure in vicinity to osteotomy and moving the bony segments to desired position exactly as planned during computer simulation. The purpose of this study is assess the role of computer assisted designed and manufactured surgical guide in minimizing inferior alveolar nerve injury during sagittal split ramus osteotomy (SSRO). Materials and Methods: A prospective double blind, randomized controlled, clinical trial is designed to assess role of computer assisted designed and manufactured surgical guide in min- imizing inferior alveolar nerve injury during sagittal split ramus osteotomy (SSRO). We had two study group, the side of mandibular ramus that were treated by conventional SSRO (can be right or left) and the side that was treated using the computer designed and manufactured surgical guideof same patient (can be right or left side). For every patient the side of mandibular and osteotomy technique was selected by simple random sampling technique (double coin tossing). The statistical analyses were performed using SPSS version 25 (statistics package for social sciences, Chicago. IL). Statistical significance threshold was set to 0.05 (p-value<0.05). Result: The study population consisted of 10 subjects undergoing SSRO (Sagittal split ramus osteotomy). Seven (70%) were female and three were male. Their mean (±SD) age was 22.4±3024 yrs., range 16 to 27. The mean (±SD) duration of osteotomy on surgical guide assisted SSRO side was 37.2±4.83 and for conventional SSRO side it was 28.2±4.10 and the difference is statistically significant. Conclusion: Using CAD/CAM surgical guide for SSRO has no significant difference with con- ventional osteotomy technique regarding minimizing the incidence of inferior alveolar nerve inju- ries that occurs intraoperatively.


2002 ◽  
Vol 81 (9) ◽  
pp. 636-644 ◽  
Author(s):  
Ramzi T. Younis ◽  
Rande H. Lazar ◽  
Vinod K. Anand

Despite improvements in antibiotic therapies and surgical techniques, sinusitis still carries a risk of serious and potentially fatal complications. We examined the charts of 82 patients who had been admitted to the University of Mississippi Medical Center between Jan. 1, 1985, and Dec. 31, 1999, for treatment of complications of sinusitis. Of these 82 patients, 43 had orbital complications and 39 had intracranial complications. In this article, we describe our findings in those patients who had intracranial complications (our findings in patients with orbital complications will be reported in a future article). The most common intracranial complication was meningitis; others were epidural abscess, subdural abscess, intracerebral abscess, Pott's puffy tumor, and superior sagittal sinus thrombosis. Most patients with meningitis were treated with drug therapy only; patients with abscesses were generally treated with intravenous antibiotics and drainage of the affected sinus and the abscess. Advancements in antibiotic therapy, endoscopic surgery, imaging studies, and computer-assisted surgery have helped improve outcomes. Management of these patients should be undertaken immediately and is best achieved via a multidisciplinary approach, involving the otolaryngologist, neurosurgeon, radiologist, anesthesiologist, infection disease specialist, pediatrician, internist, and others.


Skull Base ◽  
2005 ◽  
Vol 15 (S 2) ◽  
Author(s):  
Ralf Gutwald ◽  
R. Schön ◽  
M. Metzger ◽  
C. Zizelmann ◽  
N.-C. Gellrich ◽  
...  

Skull Base ◽  
2007 ◽  
Vol 16 (04) ◽  
Author(s):  
Klaus Stelter ◽  
Christoph Matthias ◽  
Kathrin Spiegl ◽  
Christian Lübbers ◽  
Andreas Leunig ◽  
...  

Skull Base ◽  
2007 ◽  
Vol 16 (04) ◽  
Author(s):  
Wolfgang Maier ◽  
Petra Lohnstein ◽  
Joerg Schipper

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