Comparison of the third molar maturity index (I3M) between left and right lower third molars to assess the age of majority: a multi-ethnic study sample

Abstract Objectives The aim was to evaluate the characteristics of the mandibular third molars, especially in relation to the inferior alveolar nerve. Further aims were to investigate incidental findings in panoramic radiographs in an adult population, and to investigate image quality related to patient positioning. Materials and Methods From a previous study with 451 randomly selected adult participants who lived in Sweden, 442 panoramic radiographs from four dental public health clinics were used. The third molars’ characteristics and relation to inferior alveolar nerve were evaluated. Incidental findings and patient positioning were recorded. Statistical Analysis Frequency analysis was used to investigate the occurrence of all findings and their possible interconnections. Whether the patients’ age or gender had an impact or not was also analyzed. Results The third molars were erupted in vertical position among 73% regardless of age. When retained or semi-retained, they were most commonly in mesioangular positions. The inferior alveolar nerve was located inferior to the roots in 52%, whereas an overlapped position was most common if the third molar was retained (90%), semi-retained (83%) or the age was less than 30 years (66%). Common incidental findings were apical radiolucencies, idiopathic osteosclerosis, and tooth fragments. Suboptimal patient positioning was found in one-third of the radiographs. Conclusions Panoramic radiography is a useful method to evaluate third molar prior to surgical removal and may be the only image required. Most incidental findings on panoramic radiographs does not seem to require any further odontological management.

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Evaluation of Hemodynamic Cerebral Disordersin Patients Subjected to the Third Molar Extraction.Evaluation of the Effectiveness of OsteopathicRehabilitation after Tooth Extraction

Russian Osteopathic Journal ◽

10.32885/2220-0975-2016-1-2-60-66 ◽

2016 ◽

pp. 60-66

Author(s):

А. . Atyakshev ◽

N. . Tekoutieva

Keyword(s):

Tooth Extraction ◽

Third Molar ◽

Cerebral Hemodynamics ◽

Third Molars ◽

The Third ◽

Upper Jaw ◽

Rehabilitation Measures

Extraction of the third molars from the upper jaw can cause somatic dysfunctions and changes in cerebral hemodynamics in patients. Rehabilitation measures aimed to correct somatic dysfunctions and restore cerebral hemodynamics are necessary for these patients.

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Accuracy of cone-beam computed tomography in defining spatial relationships between third molar roots and inferior alveolar nerve

European Journal of Dentistry ◽

10.4103/1305-7456.195168 ◽

2016 ◽

Vol 10 (04) ◽

pp. 454-458 ◽

Cited By ~ 3

Author(s):

Roberto Pippi ◽

Marcello Santoro ◽

Ferdinando D'Ambrosio

Keyword(s):

Computed Tomography ◽

Cone Beam Computed Tomography ◽

Root Morphology ◽

Inferior Alveolar Nerve ◽

Third Molar ◽

Root Surface ◽

Cone Beam ◽

Spatial Relationships ◽

Third Molars ◽

The Third

ABSTRACT Objective: Cone-beam computed tomography (CBCT) has been proposed in surgical planning of lower third molar extraction. The aim of the present study was to assess the reliability of CBCT in defining third molar root morphology and its spatial relationships with the inferior alveolar nerve (IAN). Materials and Methods: Intraoperative and radiographic variables of 74 lower third molars were retrospectively analyzed. Intraoperative variables included IAN exposure, number of roots, root morphology of extracted third molars, and presence/absence of IAN impression on the root surface. Radiographic variables included presence/absence of the cortex separating IAN from the third molar roots on CBCT examination, number of roots and root morphology on both orthopantomography (OPG) and CBCT. The statistical association between variables was evaluated using the Fisher's exact test. Results: In all cases of intraoperative IAN exposure, the cortex appeared discontinuous on CBCT images. All cases, in which the cortical bone was continuous on CBCT images, showed no association with nerve exposure. In all cases in which nerve impression was identified on the root surface, the IAN cortex showed interruptions on CBCT images. No nerve impression was identified in any of the cases, in which the cortex appeared continuous on CBCT images. CBCT also highlighted accessory roots and apical anomalies/curvatures, not visible on the OPG. Conclusions: CBCT seems to provide reliable and accurate information about the third molar root morphology and its relationship with the IAN.

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The Oblique Lateral Jaw Radiograph

British Journal of Orthodontics ◽

10.1179/bjo.1.4.139 ◽

1974 ◽

Vol 1 (4) ◽

pp. 139-142

Author(s):

C. P. Adams

Keyword(s):

Present Article ◽

Third Molar ◽

Third Molars ◽

X Ray ◽

The Third ◽

Molar Teeth ◽

Relationship Of ◽

The Relationship ◽

Film Area

The Oblique Lateral Jaw Radiograph has been used as a routine diagnostic x-ray view for many years as an aid to orthodontic diagnosis and for the assessment of the positions of unerupted third molar teeth. Many methods for obtaining clear undistorted views of the teeth have been suggested from a freehand setting up of film, patient and x-ray tube, to the use of simple orientated devices. The present article describes a method of standardizing the relationship of film and x-ray tube to one another so that it is only necessary for the radiographer thereafter to place the patient on the film area in a manner depending on whether a view. is required of the third molars only or of the complete upper and lower buccal segments.

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Age of majority assessment in Dutch individuals based on Cameriere’s third molar maturity index

Forensic Science International ◽

10.1016/j.forsciint.2017.11.009 ◽

2018 ◽

Vol 282 ◽

pp. 231.e1-231.e6 ◽

Cited By ~ 12

Author(s):

Hatice Boyacıoğlu Doğru ◽

Ayşe Gulsahi ◽

Sevi Burçak Çehreli ◽

Ivan Galić ◽

Paul van der Stelt ◽

...

Keyword(s):

Third Molar ◽

Maturity Index ◽

Age Of Majority

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Orthognathic Treatment with Autotransplantation of Impacted Maxillary Third Molar

The Angle Orthodontist ◽

10.2319/022008-103.1 ◽

2009 ◽

Vol 79 (2) ◽

pp. 401-406 ◽

Cited By ~ 4

Author(s):

Toru Kitahara ◽

Akihiko Nakasima ◽

Yuji Shiratsuchi

Keyword(s):

Third Molar ◽

Third Molars ◽

Sagittal Split Ramus Osteotomy ◽

Maxillary Third Molar ◽

Total Treatment ◽

Left And Right ◽

Mandibular Third Molars ◽

Mandibular Protrusion ◽

Successful Collaboration ◽

Le Fort I

Abstract This article presents orthognathic treatment in successful collaboration with autotransplantation of the maxillary third molar. The case report describes a 24-year-old man with severe mandibular protrusion and severe crowding in both dentitions. Overbite was 0 mm, overjet, −15 mm. Maxillary second molars and mandibular third molars were extracted, and presurgical multibracket treatment was begun. Maxillary third molars were impacted completely at 18 months in terms of presurgical tooth alignment. Autotransplantation of the teeth was achieved to substitute for extracted maxillary second molars. At 6 months after autotransplantation, the maxilla was advanced 4 mm on both sides through a Le Fort I procedure; left and right sides of the mandible were set back 15 and 18 mm, respectively, via sagittal split ramus osteotomy to improve mandibular protrusion. The total treatment period lasted 37 months. Autotransplantation treatment is an effective modality for tooth replacement when a donor tooth is available. Fully impacted maxillary third molars are potentially reliable candidates for autotransplantation.

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Third Molar Eruption Mechanisms and Patterns

Dentistry 3000 ◽

10.5195/d3000.2016.49 ◽

2016 ◽

Vol 4 (1) ◽

pp. 11-16

Author(s):

Winnie Zhang

Keyword(s):

Molecular Mechanisms ◽

Third Molar ◽

Radiographic Examination ◽

Third Molars ◽

The Third ◽

Occlusal Surfaces ◽

Surgical Extraction ◽

Incipient Caries ◽

The Moment ◽

Third Molar Eruption

Third molars are highly variable in their presence and form. This report focuses on a horizontally impacted third molar and analyzes the potential etiology of this situation. Upon a clinical and radiographic examination, it was noted that the patient had four third molars present. The patient’s third molars began erupting around the age of 19. Currently, they are asymptomatic with incipient caries on the occlusal surfaces. While three of the third molars erupted in a normal orientation, one of the third molars (mandibular left) erupted in an orientation that would be classified as horizontal and/or mesio-angular. No treatment has been undertaken at the moment, however surgical extraction can be recommended with the prognosis being very good. For the clinician that has to treat dental complications that arise from abnormal tooth eruption, as seen in numerous genetic and acquired disorders, knowledge about the basic molecular mechanisms involved may become extremely important.

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