scholarly journals PREDICTION OF EXTRACTION DIFFICULTY FOR INFERIOR THIRD MOLAR

InterConf ◽  
2021 ◽  
pp. 273-278
Author(s):  
Gabriela Motelica ◽  
Nicolae Chele ◽  
Sergiu Beliniuc
Keyword(s):  
Medical Records ◽  
Third Molar ◽  
Radiographic Examination ◽  
Common Complication ◽  
Correct Position ◽  
Anatomical Structures ◽  
Second Molar ◽  
Mandibular Third Molar ◽  
Mandibular Molar ◽  
The University

Inferior third molar impaction remains an actual topic of discussion in modern dentistry due to the frequent complications and treatment contraindications. According to Rock and Elsey inferior third mandibular molar impaction occurs in 73% of young people. Many theories of impaction of inferior 3rd molar have been proposed, but the most popular is the insufficient development of retromolar space. Some authors claim that M3 extraction should only be performed when complications may occur, others say that M3 should be extracted if there are no contraindications, but Martin Kunkel is the advocate of the prophylactic extraction of the inferior third molar. In order to achieve the proposed goal, the frequency of impaction of mandibular third molar and their relationship with neighboring anatomical structures was evaluated. There were statistically processed data of medical records and radiographic examination. This study was made based on 320 patients treated in the University Dental Clinic nr.2, SUMPh ,,Nicolae Testemițanu”. Of these, 147 patients were selected: 58 patients with impacted inferior 3rd molar and 89 patients with inferior 3rd molar apparently erupted in the correct position. The most common complication caused by M3 was pericoronitis, followed by second molar caries.

scholarly journals Conduction of Third Molar Extraction with the Presence of Retromolar Canal: A Case Report

2021 ◽  
Vol 15 (1) ◽  
pp. 547-550
Author(s):  
Lara Jaiane Norbert Furlan ◽  
Caroline De Freitas Conceição ◽  
Eduardo Martinelli Santayana de Lima ◽  
Roberto Ferreira Zanin ◽  
Alexandre Weber
Keyword(s):  
Third Molar ◽  
Radiographic Examination ◽  
Prevention Measures ◽  
Anatomical Structures ◽  
Third Molar Extraction ◽  
Dental Procedures ◽  
Mandibular Third Molar ◽  
Santa Maria ◽  
Molar Region ◽  
Retromolar Canal

Introduction: The retromolar canal is a structure rarely identified in clinical practice. The content of this canal is composed of nerves, arteries and venous plexus that give innervation and irrigation to the third molar region and the vestibular mucosa of molars and lower premolars. Thus, knowledge of the presence of this structure is important in dental procedures, due to the complications that damage to this structure can cause. Methods: In this report, a 19-year-old patient sought dental care at a clinic, Dentistry course at the Federal University of Santa Maria for the extraction of third molars due to hygiene difficulties. On radiographic examination, a retromolar canal was identified at the distal of the left mandibular third molar. With the identification of this structure, preventive measures were performed during the procedure to avoid complications. Results: With adequate planning and prevention measures, the trans and postoperative periods occurred without any complications. Conclusion: The foramen and the retromolar canal may occasionally appear in the clinic radiographic routine of the Dentist, and the professional should be attentive to the management of these anatomical structures during surgical procedures to avoid accidents and complications.

scholarly journals Autotransplantation of Mandibular Third Molar: A Case Report

2012 ◽  
Vol 2012 ◽  
pp. 1-5
Author(s):  
Pabbati Ravi kumar ◽  
Mandava Jyothi ◽  
Kantheti Sirisha ◽  
Khushboo Racca ◽  
Chalasani Uma
Keyword(s):  
Third Molar ◽  
Radiographic Examination ◽  
Second Molar ◽  
Tooth Transplantation ◽  
Satisfactory Outcome ◽  
Mandibular Third Molar ◽  
Mandibular Second Molar ◽  
One Year ◽  
Autogenous Transplantation ◽  
Implant Treatment

Autogenous transplantation is a feasible, fast, and economical option for the treatment of nonsalvageable teeth when a suitable donor tooth is available. This paper presents successful autotransplantation of a mature mandibular left third molar (38) without anatomical variances is used to replace a mandibular left second molar (37). The mandibular second molar was nonrestorable due to extensive root caries and resorption of distal root. After extraction of mandibular second and third molars, root canal therapy was done for the third molar extraorally, and the tooth was reimplanted into the extracted socket of second molar site. After one year, clinical and radiographic examination revealed satisfactory outcome with no signs or symptoms suggestive of pathology. In selected cases, autogenous tooth transplantation, even after complete root formation of the donor tooth, may be considered as a practical treatment alternative to conventional prosthetic rehabilitation or implant treatment.

scholarly journals Tooth autotransplantation of the mandibular third molar: A case report

2021 ◽  
pp. 166-170
Keyword(s):  
Third Molar ◽  
Radiographic Examination ◽  
Viable Option ◽  
Root Canal Therapy ◽  
Recipient Site ◽  
Second Molar ◽  
The Third ◽  
Satisfactory Outcome ◽  
Mandibular Third Molar ◽  
Mandibular Second Molar

Autotransplantation is a viable option for treating teeth with severe decay when a donor tooth is available. Our case was a 29-year-old female that her mandibular second molar was non restorable due to extensive root caries. After extraction of mandibular second molar, the mandibular third molar was reimplanted into the recipient site. Root canal therapy was done for the third molar after two weeks.After15 months, clinical and radiographic examination revealed satisfactory outcome with no signs or symptoms suggestive of pathology.

scholarly journals Post-natal Effect of Overexpressed DKK1 on Mandibular Molar Formation

2011 ◽  
Vol 90 (11) ◽  
pp. 1312-1317 ◽  
Author(s):  
X.L. Han ◽  
M. Liu ◽  
A. Voisey ◽  
Y.S. Ren ◽  
P. Kurimoto ◽  
...  
Keyword(s):  
Developmental Stages ◽  
Formation Rate ◽  
Third Molar ◽  
Nestin Expression ◽  
Second Molar ◽  
Mandibular Molar ◽  
Targeted Expression ◽  
Enamel Knots ◽  
Dentin Formation

Dickkopf-related protein 1 (DKK1) is a potent inhibitor of Wnt/β-catenin signaling. Dkk1-null mutant embryos display severe defects in head induction. Conversely, targeted expression of Dkk1 in dental epithelial cells leads to the formation of dysfunctional enamel knots and subsequent tooth defects during embryonic development. However, its role in post-natal dentinogenesis is largely unknown. To address this issue, we studied the role of DKK1 in post-natal dentin development using 2.3-kb Col1a1- Dkk1 transgenic mice, with the following key findings: (1) The Dkk1 transgene was highly expressed in pulp and odontoblast cells during post-natal developmental stages; (2) the 1st molar displayed short roots, an enlarged pulp/root canal region, and a decrease in the dentin formation rate; (3) a small malformed second molar and an absent third molar; (4) an increase of immature odontoblasts, few mature odontoblasts, and sharply reduced dentinal tubules; and (5) a dramatic change in Osx and nestin expression. We propose that DKK1 controls post-natal mandibular molar dentin formation either directly or indirectly via the inhibition of Wnt signaling at the following aspects: (i) post-natal dentin formation, (ii) formation and/or maintenance of the dentin tubular system, (iii) mineralization of the dentin, and (iv) regulation of molecules such as Osx and nestin.

Effects of surgical removal of mandibular third molar on the periodontium of the second molar

2008 ◽  
Vol 6 (2) ◽  
pp. 123-128 ◽  
Author(s):  
AJP Chaves ◽  
LR Nascimento ◽  
MEG Costa ◽  
M Franz-Montan ◽  
PA Oliveira-Júnior ◽  
...  
Keyword(s):  
Third Molar ◽  
Surgical Removal ◽  
Second Molar ◽  
Mandibular Third Molar

scholarly journals Radiographic assessment of lower third molar eruption in different anteroposterior skeletal patterns and age-related groups

2014 ◽  
Vol 85 (4) ◽  
pp. 577-584 ◽  
Author(s):  
Aleksandar Jakovljevic ◽  
Emira Lazic ◽  
Ivan Soldatovic ◽  
Nenad Nedeljkovic ◽  
Miroslav Andric
Keyword(s):  
Logistic Regression ◽  
Age Groups ◽  
Third Molar ◽  
Width Ratio ◽  
Class Iii ◽  
Second Molar ◽  
Age Related ◽  
Mandibular Third Molar ◽  
Lateral Cephalograms ◽  
Third Molar Eruption

ABSTRACT Objective:  To analyze radiographic predictors for lower third molar eruption among subjects with different anteroposterior skeletal relations and of different age groups. Materials and Methods:  In total, 300 lower third molars were recorded on diagnostic digital orthopantomograms (DPTs) and lateral cephalograms (LCs). The radiographs were grouped according to sagittal intermaxillary angle (ANB), subject age, and level of lower third molar eruption. The DPT was used to analyze retromolar space, mesiodistal crown width, space/width ratio, third and second molar angulation (α, γ), third molar inclination (β), and gonion angle. The LC was used to determine ANB, angles of maxillar and mandibular prognathism (SNA, SNB), mandibular plane angle (SN/MP), and mandibular lengths. A logistic regression model was created using the statistically significant predictors. Results:  The logistic regression analysis revealed a statistically significant impact of β angle and distance between gonion and gnathion (Go-Gn) on the level of lower third molar eruption (P < .001 and P < .015, respectively). The retromolar space was significantly increased in the adult subgroup for all skeletal classes. The lower third molar impaction rate was significantly higher in the adult subgroup with the Class II (62.3%) compared with Class III subjects (31.7%; P < .013). Conclusion:  The most favorable values of linear and angular predictors of mandibular third molar eruption were measured in Class III subjects. For valid estimation of mandibular third molar eruption, certain linear and angular measures (β angle, Go-Gn), as well as the size of the retromolar space, need to be considered.

scholarly journals Correlationof Mandibular Second Molar Caries with Patterns of Mandibular Third Molar Impaction

2017 ◽  
Vol 4 (1) ◽  
pp. 23-27
Author(s):  
Muhammad Ilyas ◽  
Jawad Ahmad Kundi ◽  
Irtifaq Ahmad Noor ◽  
Obaid Zeb ◽  
Salman Khan
Keyword(s):  
Retrospective Study ◽  
Pearson Correlation ◽  
Third Molar ◽  
Impacted Teeth ◽  
Second Molar ◽  
Clinical Notes ◽  
Mandibular Third Molar ◽  
Vertical Impaction ◽  
Mandibular Second Molar ◽  
Head Of Department

OBJECTIVESThe aim of this study was to evaluate the relation of distal caries of second molar with patterns of impacted third molar.METHODOLOGYA retrospective study was carried out from January 2017 to June 2017.A total of 160 patients and 276 impacted teeth were selected with an age > 18 years. A single researcher assigned the diagnosis of caries and patterns of impacted teeth through clinical notes and orthopantomogram(OPG)which was reviewed by Head of Department. Winter’s and Pell and Gregory classification was used for impaction classification. The data was analyzed using SPSS 22.0 version. P ≤ 0.05 was considered as statistically significant.RESULTSFemale (56.3%) were predominant than male (43.8%) with mean age presentation was 24.2 ± 4.7 years.271 mandibular second molars were present. Vertical (64.5%) impaction was found to be the most frequent followed by mesioangular (19.6%). Pearson correlation showed that vertical impaction was significantly related to distal caries of second molar(Right side, r=.262 p=.002 and Left side, r=.240 p=.006).CONCLUSIONVertical impaction was positively related with distal caries therefore prophylactic removal of lower impacted teeth is recommended.

scholarly journals Is prophylactic extraction of mandibular third molar indicated? A retrospective study.

2020 ◽  
Author(s):  
Zhouxi Ye ◽  
Wenhao Qian ◽  
Yubo Wu ◽  
Bing Sun ◽  
Zhiyao Li ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Older Patients ◽  
Third Molar ◽  
P Value ◽  
Third Molars ◽  
Impacted Teeth ◽  
Second Molar ◽  
Mandibular Third Molar ◽  
Mandibular Second Molar ◽  
Mandibular Third Molars

Abstract Background To evaluate the associations of impaction patterns of mandibular third molars (M3Ms) with pathologies caused by them. Methods In this study, 262 patients with 432 impacted M3Ms were included. The pathologies include pericoronitis, mandibular second molar (M2M) caries, and M2M distal periodontal pathology. The impaction patterns of M3Ms and the pathologies were examined, and the M2Ms outcomes after the surgeries were evaluated. χ2 test was used to analyze the data and a P value of <0.05 was considered statistically significant. Results Pericoronitis was the major symptom in all patients, whereas the propensities of M2M distal caries and periodontal pathologies increased in older patients. Soft tissue impacted and vertically angulated teeth were more associated with the pericoronitis (p <0.05); Mesio-angular impacted teeth in less deep positions had greater risks of M2Ms distal caries (p <0.05); Mesio-angular and horizontal impacted teeth in relative deep positions were more likely to cause M2Ms distal periodontal pathologies (p <0.05). Conclusions Extractions of soft tissue impacted teeth in vertical angulations should be considered. While removals of mesially and horizontally angulated or bony impacted teeth could be delayed.

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