The Impact of Diagnosis, Extent and Treatment modality of mandibular benign lesions on the supposedly repositioning of the Inferior Alveolarcanal -A retrospective observational study (original) (raw)
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Anatomic and radiologic course of the mandibular incisive canal
Surgical and Radiologic Anatomy, 2000
The purpose of this article was to define the anatomic and radiographic courses of the incisive mandibular canal and discuss its clinical significance. The study group comprised of 46 hemimandibles fixed in formalin. After radiographic examination, the buccal cortical plate of the mandible was removed leaving the bony frame of the incisive bundle intact. The morphology of the bony walls of the canal was evaluated, as having complete, partial, or no cortical walls. The course of the intraosseous pathway of the canal and its diameter in four different locations were recorded.
Imaging Science in Dentistry, 2019
Purpose: This study reviewed the common conditions associated with displacement of inferior alveolar nerve canal. Materials and Methods: General search engines and specialized databases including Google Scholar, Pub Med, Pub Med Central, Science Direct, and Scopus were used to find relevant studies by using keywords such as "mandibular canal", "alveolar canal", "inferior alveolar nerve canal", "inferior dental canal", "inferior mandibular canal" and "displacement". results: About 120 articles were found, of which approximately 70 were broadly relevant to the topic. We ultimately included 37 articles that were closely related to the topic of interest. When the data were compiled, the following 8 lesions were found to have a relationship with displacement of mandibular canal: radicular/residual cysts, dentigerous cyst, odontogenic keratocyst, aneurysmal bone cyst, ameloblastoma, central giant cell granuloma, fibrous dysplasis, and cementossifying fibroma. Conclusion: When clinicians encounter a lesion associated with displaced mandibular canal, they should first consider these entities in the differential diagnosis. This review would help dentists make more accurate diagnoses and develop better treatment plans according to patients' radiographs. (Imaging Sci Dent 2019; 49: 79-86
Rare Courses of the Mandibular Canal in the Molar Regions of the Human Mandible: A Cadaveric Study
Okajimas Folia Anatomica Japonica, 2005
The inferior alveolar artery, vein and nerve send some branches to the molar teeth via the mandibular canal to the mental foramen. The present study attempted to define the presence and course of the mandibular canal in the mandible with the alveolar process by macroscopic cadaveric dissection and computerized tomography (CT) in order to provide information that might prevent injuries to vessels and nerves at risk during root canal treatment. We identified the position of the mandibular canal within a 30% ratio of the distance from inferior border of mandible to the apices of the root for 39 out of 131 sides (mesial root of first molar, 20%; distal root of first molar, 22.6%; mesial root of second molar, 27.8% and distal root of second molar, 47%) on panoramic X-ray observation. In one cadaver (male, 64 years old), the root apex of the second molar was in close proximity to the upper bony mandibular canal. Macroscopic dissection and computerized tomography showed that the main trunks of the inferior alveolar artery, vein, and nerve were in tight contact with the apex of the second molar. These observations of the anatomic course of the mandibular canal will be important to consider during root canal treatment of mandibular teeth.
Topographic analysis of the mandibular canal in coronal section, in the region of molars
Journal of Morphological Sciences, 2017
The studies about bone resorption contributed greatly to the advancement of rehabilitation with dental implants and Buccomaxillo facial Surgery and Traumatology. This phenomenon leads to a more superficial localization of the mandibular canal in relation to the alveolar ridge when teeth are lost, limiting and hindering the installation Bone tissue, of implants, as well as other surgical procedures. This anatomical study aimed to analyze and interpret the distances from the mandibular canal to the alveolar ridge, in groups of dentate individuals and toothless, comparing them statistically, so 20 adult male cadavers divided into two groups, namely group A, formed by 10 dentate and group B, consisting of 10 toothless individuals. All their teeth were dissected and then, were checked the measurements of the distances between the roof of the mandibular canal and the alveolar ridge. The averages found were enlightening to say that bone resorption has consequences for treatment and surgery...
PubMed, 2014
Background: To emphasize the characteristics and possible pitfalls of nerve reposition in cases of severe bone resorption in the posterior mandibular area, and to modify hard- and soft-tissue manipulation accordingly. Methods: We analyzed retrospectively, 7 patients in which we performed full arch lower jaw rehabilitation. The patients presented for oral rehabilitation having a minimal residual bone above the mandibular canal and had undergone inferioral veolar nerve (IAN) displacement with modified surgical technique for fixed prosthetic rehabilitation. Results: Eleven procedures of nerve repositioning were performed on severely atrophic mandibles. The average age of the patients was 43.29 years (12.37 SD). Residual bone above the mental foramen ranged between 0.5 mm and 1.5 mm, with an average of 0.93 mm (0.35 SD). In total, 32 dental implants were inserted into the area simultaneously with nerve displacement. The average follow-up time was 35.71 months(41.75 SD), ranging between 7 and 120 months. Conclusions: Severe atrophic cases require special attention due to the loss of keratinized tissue around the crestal area.The use of a modified surgical approach and specific surgical instruments provides a safer working environment for the operator and ensures optimal results.
Mandibular Canal and Its Incisive Branch : A CBCT Study
World Family Medicine Journal/Middle East Journal of Family Medicine
Objective: Prevention from damage to the mandibular canal (MC) during invasive dental procedures is essential. The aim of this study was to determine the course of MC, anterior branch and its relation to mandibular teeth. Materials and Methods: In cross-sectional view, the MC diameter, the distance from root apex to MC, the distance of MC to mandibular lower border, the distance of MC from buccal and lingual cortical borders, from the distal root of third molar to first premolar in apex roots area of all posterior teeth were identified by using 207 CBCT images. The presence of the anterior loop, the position of mental foramen, position and diameter of incisive branch on the last visible point were also determined. Examples were divided into the groups in terms of age, sex and side and were analyzed with descriptive statistics. Results: The nearest root to the MC was the distal root of third molar in women less than 30 years (0.38±0.58 mm) and the most distant root was the second premolar tooth in men 30-50 years (6.06±2.20 mm). The most common site for mental foramen, was between premolars and the area between the first premolar and canine teeth was the most common site for incisive canal on the last point of view. There was no significant differences between right and left mandibular measurements. Conclusion: The position of MC towards mandibular posterior teeth is more influenced by age and sex. Also, the position of MC towards the bucco-lingual plate depends on the antero-posterior position of mental foramen. So any procedures in the mandibular posterior area should be performed with sufficient knowledge of the nervous canal.
Variation of the Mandibular Canal: Case Report
It has vital importance to know the details of anatomical variations of mandibular canal such as double mental foramen, bifid mandibular canal for surgical intervention. One bifid mandibular canal is so-called retromolar canal is an anatomical structure on the alveolar surface of the retromolar area. The presence of a retromolar canal may hamper obtaining anaesthesia of buccal and retromolar mucosa. Lower third molar region has complicated anatomical structure. The detection of the anatomical variations such as retromolar canal is important because of its clinical implications. Cone beam computed tomography (CBCT) provides valuable diagnostic information in the detection of anatomical structures. In this case report, the incidentally found retromolar canal in a 30-year-old female patient is presented by using panoramic and CBCT views. Keywords: Mandibular nerve; cone-beam computed tomography; radiography, panoramic
Clinical Assessment and Surgical Implications of Anatomic Challenges in the Anterior Mandible
Clinical Implant Dentistry and Related Research, 2003
Nrickpuirrrd: The anterior mandible is generally considered a rather safe surgical area, involving few risks of damage to vit<iI an,itomic structures. Nevertheless, both neurosemory disturbances and hemorrhages have been reported after implant surgery in that particular area. Pirrposcx With the increasing demand for oral implant placement, the anatomy of the anterior inandible should receive more cittention. This review will focus on the anatomic peculiarities of the anterior mandible and the related clinical implications. .Ilctlioils: The scientific evidence on the anatomic, histologic, physiologic, and clinical aspects of the neurovascularization of the anterior mandible will he reviewed. Kcsrrlts: Surgical complications may be attributed to the existence of a mandibular incisive canal with a true neurovascLi-l~r supply. Potential risks may also be related to the presence of the lingual foramen and anatomic variations, such as an mtcrior looping of the mental nerve. Co/idirsiotrs; Preoperative radiographic planning for oral iniplant placement in the anterior mandible should therefore not only consider all esthetic and functional demands but should also pay particular attention to the anatomic peculiarities of this region to avoid any neurovascular complications.
Mandibular Canal Enlargement: Clinical and Radiological Characteristics
Journal of Clinical Imaging Science, 2017
Enlargement of the mandibular canal is a rare radiological finding. Clinically, it may or may not be associated with sensory deficits. We report four cases of widening of the mandibular canal observed with various methods of imaging with different clinical characteristics. We describe this unique radiological finding and elaborate the importance of quality assessment of the imaging that is vital for accurate diagnosis and treatment planning. Clinicians should be mindful when assessing the imaging whenever the size of the mandibular canal is implicated. The case ranged from a benign tumor to malignancy, radiological errors, and artifacts. A more superior imaging or treatment modality was necessary to ascertain the diagnosis.