Mental nerve paresthesia associated with endodontic paste within the mandibular canal: report of a case
69
Citation
20
Reference
10
Related Paper
Citation Trend
Keywords:
Mental nerve
Mandibular canal
Mandibular nerve
Mental foramen
Mental nerve
Premolar
Mandibular canal
Mandible (arthropod mouthpart)
Foramen
Mandibular nerve
Cite
Citations (24)
Having complete information about a patient's mandibular canal and mental foramen is fundamental to performing safer procedures and avoiding intraoperative and postoperative complications. Cone beam computed tomography (CBCT) produces accurate images for the analysis of maxillomandibular bone structures and is widely used in dentistry. The aim of this study is to report a case of mandibular bifid canal associated with triple mental foramina that was revealed with CBCT images. A 45-year-old woman was referred for a CBCT scan of remaining bone quantity to assist in preoperative implant planning. The patient had reported problems related to anesthesia during extraction of the mandibular right second and third molars. Examination showed bilateral bifurcation of the mandibular canal, from the mandibular foramen to the gonial angle. In addition, exteriorization of the mandibular canal was noticed in 3 regions; that is, there were 3 distinct mental foramina. Clinicians must be aware of these anatomical variations in the mandibular region during dental procedures to avoid complications such as difficulty in obtaining anesthesia or postoperative sensory dysfunction.
Mental foramen
Mandibular canal
Mental nerve
Mandible (arthropod mouthpart)
Mandibular nerve
Gonial angle
Inferior alveolar nerve
Foramen
Cite
Citations (4)
Introduction: The mental foramen (MF) opens on the lateral aspect of the mandible near premolar region on both sides of the mandible. The portion of inferior alveolar nerve present anterior to the MF, prior to exiting the canal, is referred to as the anterior loop (AL) of the inferior alveolar nerve. These anatomical variations cannot be evaluated by conventional imaging techniques. Cone beam computed tomography (CBCT) provides three-dimensional reliable images of maxilla–mandibular region. Hence, it plays an important role to detect and evaluate these anatomical variations and to prevent intra- and postoperative complications. Materials and Methods: This retrospective observational study includes 500 CBCT images of the mandible. The average size, location, shape of MF, and presence of AL were assessed in sagittal, tangential, and axial sections. Results: Out of 250 CBCT scans analyzed, 132 scans (52.8%) were of males and 118 scans (47.2%) belonged to females. The mean size of MF as measured in the sagittal sections was found to be 3.36 mm in height and 2.54 mm in length. The most common position for the MF related to the mandibular teeth in this study was between first and second premolars in 310 CBCT images (62%). A majority of the MF were oval in shape (n = 346, 69.2%) followed by round shape (n = 154, 30.8%). The presence of AL of inferior alveolar nerve was found in only 20% (n = 100) of cases in this study. Conclusion: Considering these variations in MF and AL, the use of CBCT seems necessary for better evaluation and treatment planning.
Mental foramen
Inferior alveolar nerve
Mandibular canal
Mandible (arthropod mouthpart)
Mandibular nerve
Mental nerve
Premolar
Cite
Citations (8)
The mental foramen is an important landmark during surgical procedures such as osseous grafting or the placement of dental implants. To avoid injuring the mental nerve, it is important both to carefully assess the location of the mental foramen and to determine whether an anterior loop of the mental nerve or the incisive canal lies mesial to it. The objective of this study was to quantify the ability of cone beam computed tomography (CBCT) to measure the length of the mental nerve loop, the length and diameter of the incisive nerve canals, and the incisive canal path.The study included 352 CBCT scans that had originally been used for preoperative planning of implant placement in the interforaminal region of the anterior mandible. For each scan, the length of the mental nerve loop and the length, diameter, and path of the incisive canal were determined. Mean values were compared between groups based on sex, right versus left side, and whether the patient was edentulous.The inferior alveolar nerve loop and incisive canal had a mean length of 2.40 ± 0.93 mm and 9.11 ± 3.00 mm, respectively. The mean incisive canal diameter was 1.48 ± 0.66 mm and showed a downward path in 51.3% of CBCT images and a linear or upward path in 38.29% and 10.41% of scans, respectively.CBCT provides an accurate means to identify critical anatomical features in the anterior mandible during preoperative surgical planning.
Mental foramen
Mental nerve
Inferior alveolar nerve
Mandibular canal
Mandible (arthropod mouthpart)
Mandibular nerve
Cite
Citations (74)
A review of the literature revealed that a common feature of all human mandibles is a large nerve (inferior alveolar nerve, IAN) between the mandibular and mental foramina. This nerve sends branches directly to the teeth or contributes a variable number of branches to a plexus of nerves which does the same. The plexus originates from a separate nerve that enters the mandibular foramen. The nerve plexus has been demonstrated by dissections and not by radiology. The buccal-lingual and superior-inferior positions of the IAN were not consistent among mandibles. The intramandibular IAN frequently ran a concave curve with a posterior segment descending as it progressed anteriorly and an anterior segment that ascended to the mental foramen. A bony canal was not always observed between the mandibular and mental foramina. The canal frequently lacked definite walls, especially near the mental foramen. Bilateral symmetry (location of the canal in each half of the mandible) was common, whereas duplications of the canal were rare. Nutrient canals and other branches of the mandibular nerve have been observed within the mandible. These may have been confused for the IAN or may contribute to the plexus of nerves.
Mental foramen
Mandibular canal
Inferior alveolar nerve
Mandible (arthropod mouthpart)
Foramen
Mental nerve
Mandibular nerve
Maxillary nerve
Cite
Citations (48)
A review of the literature revealed that a common feature of all human mandibles is a large nerve (inferior alveolar nerve, IAN) between the mandibular and mental foramina. This nerve sends branches directly to the teeth or contributes a variable number of branches to a plexus of nerves which does the same. The plexus originates from a separate nerve that enters the mandibular foramen. The nerve plexus has been demonstrated by dissections and not by radiology. The buccal-lingual and superior-inferior positions of the IAN were not consistent among mandibles. The intramandibular IAN frequently ran a concave curve with a posterior segment descending as it progressed anteriorly and an anterior segment that ascended to the mental foramen. A bony canal was not always observed between the mandibular and mental foramina. The canal frequently lacked definite walls, especially near the mental foramen. Bilateral symmetry (location of the canal in each half of the mandible) was common, whereas duplications of the canal were rare. Nutrient canals and other branches of the mandibular nerve have been observed within the mandible. These may have been confused for the IAN or may contribute to the plexus of nerves.
Mental foramen
Mandibular canal
Inferior alveolar nerve
Mandible (arthropod mouthpart)
Foramen
Mandibular nerve
Mental nerve
Cite
Citations (110)
Background: Mandibular incisive nerve is one of the branch of inferior alveolar nerve. It extends anteriorly in the mandible after separating from the mental nerve and forms a plexus to supply canines and incisors. The aim of this study was to investigate the existence of incisive nerve canal and extension from anterior loop of mental nerve using dental CT in Taiwanese population.
Material and Methods: 138 mandibular dental CT images were selected from our data bank. There are 69 males and 69 females. The average age is 46.31±12.01 years old. Dental CT images were reformed using Implant Max® software. Mental foramen and anterior loop were located. The canal extension from medial side of anterior loop of mental foramen was recognized as incisive canal. The length of incisive nerve canal was measured. Results are (1) Around 70% cases did show incisive nerve canal; (2) The length of incisive nerve canal image on the right side is 6.76±6.15 mm and on the left side is 7.21±5.92 mm respectively; (3) The length of incisive nerve canal between right side and left side is not statistically significant (Pair t test, p=0.194).
Conclusion: This study demonstrates that incisive nerve canal does exist in most cases. The length of incisive nerve canal is around 7 mm and no difference between right and left side.
Mental foramen
Inferior alveolar nerve
Mandibular canal
Mental nerve
Mandible (arthropod mouthpart)
Mandibular nerve
Cite
Citations (0)
Microgenia or "small chin" is corrected by various techniques, such as insertion of an alloplastic implant, cartilage or bone grafting, or horizontal advancement osteotomy. Horizontal recession osteotomy is used in macrogenia. Particularly in a microgenic mandible, the mental foramen is unexpectedly nearer to the inferior border of the body. During sliding horizontal osteotomy of the mentum, the inferior alveolar nerve (IAN) and mental nerve are vulnerable to an injury. Thirty fresh hemimandibles were used for a study of the IAN. The IAN course was traced by serial sections at intervals of 5 mm. In 50 dry specimens the direction of the mandibular canal was evaluated by the photographs with a stick put into the mental foramen. The IAN in mandibular canal runs above the lower one-third of the mandibular body. The terminal mandibular canal locates at an average of 4.5 mm under the mental foramen, advances 5.0 mm anteriorly, loops, and ends at the foramen. The direction of the mandibular canal at the mental foramen was 39.4° lateral, 67.2° superior, and 80.2° posterior. It is advisable for surgeons to keep the level of sliding osteotomy of the mentum at least 4.5 mm below the mental foramen to spare the IAN.
Mental foramen
Inferior alveolar nerve
Genioplasty
Mandibular canal
Mental nerve
Foramen
Mandible (arthropod mouthpart)
Mandibular nerve
Cite
Citations (124)
하악공(mandibular foramen)은 하악지(mandibular ramus)의 내면 중앙부에 위치한 구멍으로 하악골 내면을 지나는 관인 하악관(mandibular canal)이 이 곳에서 시작 되어 이공(mental foramen)에서 분지를 내며 하악 결합 부위까지 연결되는 해부학적 구조물로 그 내부로는 삼차신 경 하악지(mandibular branch of trigerminal nerve)의 한 분지인 하치조 신경 및 혈관(inferior alveolar nerve and atery)이 흐르고 있으며 하악의 치아 및 점막에 분포 한다. 하악공의 전상방에는 하악소설(mandibular lingula)이라 불리는 돌기가 존재하며 하악공 대부분 유치열기에 는 교합평면 연장선상 하방에 위치하다가 성인이 되면서 거 의 연장선과 일치하게 된다. 하악골에서 하악공의 해부학적 위치는 치과 영역에서 매 우 중요하다. 특히 시술중의 동통 감소를 위한 하치조 신경 전달 마취 시의 지침이 되는 해부학적 구조로 뿐만 아니라 많이 시술되고 있는 하악골 상행지 시상 분할 골 절단술 (sagital split ramus osteotomy) 또는 수직 골 절단술 (vertical ramus osteotomy) 등의 악골 기형의 수술은 대 대한악안면성형재건외과학회지: Vol. 24, No. 3, 2002
Inferior alveolar nerve
Mandibular canal
Mandibular prognathism
Mental nerve
Mandibular nerve
Mandibular ramus
Mental foramen
Mandible (arthropod mouthpart)
Foramen
Cite
Citations (5)
The object of this study is to present a case of an accessory mental foramen. Detection of the position of mental foramen is important during surgical procedures in terms of achieving effective mandibular nerve blocks and avoiding injuries to the neurovascular bundles. A 64-year-o1d man visited us for taking treatment. Preoperative panoramic radiography and CT were conducted. A multi-section reconstructed sagittal image showed two mental foramina leading to the mandibular canal on the right side of the mandible, which were considered to be double mental foramina. Although no surgical procedure was planned, the patient was informed about the existence and importance of the anatomical variation with regard to the need for local anesthesia, diagnosis of periapical diseases, and the prevention of nerve damage during surgery in that area of his mandibleJ Shaheed Suhrawardy Med Coll, 2014; 6(2):90-92
Mental foramen
Neurovascular bundle
Mandibular canal
Mandible (arthropod mouthpart)
Mental nerve
Mandibular nerve
Foramen
Cite
Citations (0)