scholarly journals Taking advantage of an unerupted third molar: a case report

2017 ◽  
Vol 22 (4) ◽  
pp. 97-101 ◽  
Author(s):  
Igor Figueiredo Pereira ◽  
Fernando Zander Mucci Santiago ◽  
Augusto Cesar Sette-Dias ◽  
Vladimir Reimar Augusto de Souza Noronha
Keyword(s):  
Root Resorption ◽  
Third Molar ◽  
Dental Arch ◽  
Third Molars ◽  
Supernumerary Tooth ◽  
Proper Position ◽  
Dental Surgery ◽  
Second Molar ◽  
The Third ◽  
Permanent Molar

ABSTRACT Introduction: Treatments with dental surgery seek to displace tooth to the correct position within the dental arch. Objective: To report a clinical case that took advantage of an unerupted third molar. Case history: A male patient, 18 years of age, was referred by his dentist to evaluate the third molars. The clinical exam revealed no visible lower third molars. The computed tomography (CT) exam showed the presence of a supernumerary tooth in the region of the mandibular ramus, on the left side, and impaction of the third molar, which was causing root resorption on the second molar, thus making it impossible to remain in the buccal cavity. The preferred option, therefore, was to remove both second molar and the supernumerary tooth, in addition to attaching a device to the third molar during surgery for further traction. Results: After 12 months, the third molar reached the proper position. Conclusion: When a mandibular second permanent molar shows an atypical root resorption, an impacted third molar can effectively substitute the tooth by using an appropriate orthodontic-surgical approach.

scholarly journals Impact of CBCT on treatment decision related to surgical removal of impacted maxillary third molars: does CBCT change the surgical approach?

2019 ◽  
Vol 48 (8) ◽  
pp. 20190209 ◽  
Author(s):  
Louise Hermann ◽  
Ann Wenzel ◽  
Lars Schropp ◽  
Louise Hauge Matzen
Keyword(s):  
Initial Treatment ◽  
Root Resorption ◽  
Treatment Plan ◽  
Third Molar ◽  
Treatment Decision ◽  
Panoramic Image ◽  
Third Molars ◽  
Second Molar ◽  
The Third ◽  
External Root Resorption

Objectives: To assess factors influencing treatment decision for maxillary third molars referred for cone beam CT (CBCT). Parameters influencing the decision to treat and to remove either the maxillary second molar or third molar were pursued. Methods: 111 impacted maxillary third molars, clinically examined including a panoramic image, in 86 patients (mean age 26 years, range 15–55) were referred for CBCT on suspicion of pathology/root resorption in the second molar, based on information in the panoramic image. The following parameters were assessed from the patient’s file, including the radiographic images: (1) third molar angulation; (2) initial treatment plan based on clinical examination and the panoramic image; (3) diagnoses based on information from CBCT; (4) treatment decision after additional CBCT information was available; (5) pre-/post-operative complications; (6) treatment of the maxillary second molar. Results: 70 cases (63.1%) underwent treatment, while 41 (36.9%) received no treatment. Change in treatment plan was registered in 65 cases (58.6%) after CBCT. In 12 cases (10.8%), treatment changed from removal of the third to removal of the second molar, while 25 (22.5%) were scheduled for removal in the initial treatment plan; but after CBCT, the decision was not to treat. If external root resorption involved the pulp of the second molar, there was an almost 17 times higher risk that this tooth was removed instead of the third molar (logistic regression analysis: odds ratio 16.8; p < 0.001). Conclusions: Findings in CBCT often changed the treatment plan. Severe external root resorption observed in CBCT was the main decisive factor for removing the second instead of the third molar.

scholarly journals Frequency and Severity of Second Molar External Root Resorption Due to the Adjacent Third Molar and Related Factors: A Cone-Beam Computed Tomography Study

2021 ◽  
Author(s):  
Shirin Sakhdari ◽  
Sara Farahani ◽  
Ehsan Asnaashari ◽  
Sahel Marjani
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Root Resorption ◽  
Third Molar ◽  
Cone Beam ◽  
Radiology Department ◽  
Third Molars ◽  
Related Factors ◽  
Second Molar ◽  
External Root Resorption

Objective: This study sought to assess the frequency and severity of second molar external root resorption (ERR) due to the adjacent third molar and its correlation with the position of third molar and other related factors using cone-beam computed tomography (CBCT). Materials and Methods: This cross-sectional study evaluated 320 second molars and their adjacent impacted third molars on CBCT scans of patients over 16 years, retrieved from the archives of Azad University Radiology Department. Presence/absence of second molar ERR, its location and severity (if present), and position of adjacent third molar were determined on CBCT scans, and recorded in a checklist. Data were analyzed using a logistic regression model. Results: The frequency of second molar ERR was 33.4% in the mandible and 14% in the maxilla. The severity of ERR was significantly correlated with the involved jaw (P=0.001) but had no correlation with age, gender, or depth of impaction of adjacent third molar (P>0.05). The mesioangular and horizontal positions of impacted third molars had a significant correlation with the frequency of second molar ERR (P<0.006). Conclusion: According to the results of this study, ERR occurring in second molars adjacent to third molars is common, especially in the mandible. Mesially inclined third molars have a greater potential of being associated with ERR in second molars.

scholarly journals Factors associated with spontaneous mesialization of impacted mandibular third molars after second molar protraction

2019 ◽  
Vol 90 (2) ◽  
pp. 181-186
Author(s):  
Un-Bong Baik ◽  
Jin Hye Kang ◽  
Ui-Lyong Lee ◽  
Nikhilesh R Vaid ◽  
Yoon-Ji Kim ◽  
...  
Keyword(s):  
Third Molar ◽  
Regression Analyses ◽  
Third Molars ◽  
Second Molar ◽  
Factors Associated ◽  
The Third ◽  
Mandibular Second Molar ◽  
Impacted Mandibular Third Molars ◽  
Mandibular Third Molars ◽  
Mandibular First Molar

ABSTRACT Objectives: To investigate factors associated with spontaneous mesialization of impacted third molars after second molar protraction to close the space caused by a missing mandibular first molar (L-6) or retained deciduous mandibular second molars with a missing succedaneous premolar (L-E). Materials and Methods: Panoramic radiographs of patients treated with mandibular second molar protraction to close the space due to missing L-6 or L-E (14 males, 36 females, mean age = 18.6 ± 4.4 years) were analyzed before treatment (T1) and after second molar protraction (T2). Factors associated with the amount of third molar mesialization were investigated using regression analyses. Results: Mandibular second molars were protracted by 5.1 ± 2.1 mm and 5.8 ± 2.7 mm, measured at the crown and root furcation, respectively. After second molar protraction, third molars showed spontaneous mesialization by 4.3 ± 1.6 mm and 3.8 ± 2.6 mm, measured at the crown and root furcation, respectively. Nolla's stage of the third molar at T1 (B = 0.20, P = .026) and second molar protraction time (B = 0.04, P = .042) were significantly associated with the amount of third molar mesialization. Conclusions: Greater third molar mesialization was observed when Nolla's stage of the third molar was higher before treatment and when the second molar protraction time was longer.

Evaluation of Mandibular Third Molar Region in a Turkish Population Using Cone-Beam Computed Tomography

2020 ◽  
Vol 16 (9) ◽  
pp. 1105-1110
Author(s):  
Büyük Kaan Orhan ◽  
Dilek Yılmaz ◽  
Mehmet Ozgur Ozemre ◽  
Kıvanç Kamburoğlu ◽  
Orhan Gulen ◽  
...  
Keyword(s):  
Statistical Significance ◽  
Third Molar ◽  
Mandibular Canal ◽  
Third Molars ◽  
Second Molar ◽  
The Third ◽  
Impacted Mandibular Third Molar ◽  
Mandibular Third Molar ◽  
The Relationship ◽  
Molar Region

Objectives: To evaluate impacted mandibular third molar tooth region and obtain linear measurements using CBCT images and to assess the relationship between the impacted third molar and the mandibular canal. Methods: CBCT scans of 351 patients (208 females, 143 males) were assessed. Age, gender, and impaction site were recorded for each patient. The relationship of third molars with the vertical axis of second molars, 2nd molar resorption and the relationship between third molar apices and the mandibular canal were assessed. In addition, the distance between ramus and second molar, mesiodistal width of the third molar, the angle between third molar and second molar, and width of the third molar capsule were measured. Binary Logistic Regression, Chi-Square Test, and General Linear Model were used for statistical analysis. Results: The highest percentage of impaction was found for mesioangular followed by transversal and vertical. The transversal impacted third molars revealed a significant association with adjacent second molar root resorption (p<0.001). There was a statistical significance between the second molar resorption and distance between ramus and second molar (p<0.001). The mesioangular impacted third molars revealed significant relation with the mandibular canal (p<0.05). The most frequent variation found was the dental canal followed by the retromolar canal. In general, higher measurement values were obtained for men when compared to women (p<0.05). Conclusion: CBCT assessment of the third molar region provided useful information regarding impacted mandibular third molar surgery operations.

scholarly journals Agenesia de segundos premolares superiores e inferiores en un paciente pediátrico: Informe de caso. / Upper and lower second premolar agenesis in a pediatric patient: Case report.

2018 ◽  
Vol 3 (1) ◽  
Author(s):  
Alfredo Luna León ◽  
Betsy Valeria Medina Medina ◽  
Lucero Vázquez de Lara Saavedra ◽  
Alejandra Peral García
Keyword(s):  
Case Report ◽  
Female Patient ◽  
Panoramic Radiography ◽  
Treatment Options ◽  
Dental Arch ◽  
Third Molars ◽  
Patient Case ◽  
Second Molar ◽  
Permanent Molar

Resumen: La agenesia es una alteración común en el desarrollo del hombre con una prevalencia de 3.5 a 8.8 %; excluyendo a los terceros molares, se presenta generalmente en pacientes femeninos y su etiología es multifactorial. Informe de caso: paciente femenino ASA I de 10 años de edad con ausencia de segundos premolares permanentes en ambos maxilares. Se realizó la rehabilitación integral y de acuerdo a la valoración por parte del área de Ortodoncia se efectuará el desgaste selectivo de los segundos molares temporales para conseguir la migración del primer molar permanente y con ello conservar la integridad del arco dental. Conclusión: Un diagnóstico preciso y oportuno puede ser realizado por medio de la radiografía panorámica; las opciones de tratamiento dependerán de la edad y tipo de oclusión con la finalidad de conservar la integridad de los arcos, brindar un desarrollo oclusal óptimo y una mejor calidad de vida.Palabras clave: Agenesia, premolares, diagnóstico, tratamiento.Abstract: Agenesis is a common alteration in the development of men with a prevalence of 3.5 to 8.8%; excluding third molars, usually occurs in female patients and the etiology is multifactorial. Case report: female patient ASA I of 10 years of age with absence of permanent second premolars in both maxillaries. Integral rehabilitation was performed and according to the assessment by the orthodontic area was carried out the selective grinding of the deciduous second molar to achieve the migration of the first permanent molar for preserve the integrity of the dental arch. Conclusion: A reliable and timely diagnosis can be made by means of panoramic radiography; the treatment options will depend on the age and type of occlusion whit the aim of preserve the integrity of the arches, provide an optimal occlusal development and a better quality of life.Key words:  Agenesis, premolars, diagnosis, treatment.

scholarly journals Ten reasons to not ignore the third molar

2021 ◽  
Vol 26 (1) ◽  
Author(s):  
Alberto CONSOLARO ◽  
Omar HADAYA
Keyword(s):  
Dental Treatment ◽  
Third Molar ◽  
Dental Arch ◽  
Third Molars ◽  
The Third ◽  
Molar Region

ABSTRACT Introduction: The third molars are forgotten because they are the last in the dental arch, they do not directly influence the smile and they appear only in adolescence, when they do. Objectives: 1) to provide the clinician with a “checklist” to assess and diagnose changes to be screened in the third molar region in new patients; 2) to reveal the importance of not discharging the patient submitted to any dental treatment without first analyzing the third molars region clinically and on imaging examinations, since many diseases are associated to them. Result: A list of 10 situations that cover all diagnostic possibilities involving the third molars is presented. Conclusion: Adopting this protocol is a matter of habit, since the need is fundamental. The next professional assisting your patient may ask: “Did he not request examinations for the third molars?”.

scholarly journals Dental caries on distal surface of mandibular second molars

2015 ◽  
Vol 18 (1) ◽  
pp. 51 ◽  
Author(s):  
Hudson Oliveira Silva ◽  
Antonione Santos Bezerra Pinto ◽  
Moara E Silva Conceição Pinto ◽  
Marconi Raphael de Siqueira Rego ◽  
Jamyra Ferreira Gois ◽  
...  
Keyword(s):  
Third Molar ◽  
Dental Radiology ◽  
Third Molars ◽  
Inclusion Criteria ◽  
Panoramic Radiographs ◽  
Second Molar ◽  
The Third ◽  
Mandibular Third Molar ◽  
Distal Surface ◽  
Sliding Scale

<p><strong>Objective: </strong>The aim of the study was to evaluate the frequency of distal caries in the second molar influenced by the angulation of the third molar adjacent on panoramic radiographs in a clinical dental radiology. <strong>Material and</strong><strong> Methods: </strong>A descriptive and quantitative study that examined 750 panoramic radiographs, of this total, 120 were in accordance with the inclusion criteria of the study was conducted.<strong> Results: </strong>157 seconds and third molars analyzed the prevalence of caries in the distal of the second molar was 25.5%. The most prevalent angle position of the third molar was 57.3% with the vertical, but the position with the highest percentage of decayed molar second distal mesioangular was 50% of the cases. The elements listed, males obtained 40% of second molar distal caries versus 17% for females. People aged 35 or older had the highest incidence with 50% distal caries while other bands obtained 16.21% in the group 18-24 years, and 23.52% in 25-34 years. <strong> Conclusion: </strong>It was possible to establish a sliding scale on the indication for prophylactic removal of mandibular third molar according to the angulation of Winter: horizontal, mesioangular, vertical and distoangular. One can also see a greater relevance to the indication of prophylactic removal of male individuals aged over 35 years.</p>

scholarly journals Analysis of External Root Resorption of the Second Molar Associated with an Impaction of the Third Molar by the Application of CBCT

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
Stefan Velickovic ◽  
Milos Zivic ◽  
Zlata Rajkovic ◽  
Dragana Stanisic ◽  
Aleksandra Misic ◽  
...  
Keyword(s):  
Surgical Intervention ◽  
Root Resorption ◽  
Third Molar ◽  
Third Molars ◽  
Second Molar ◽  
Dental Tissues ◽  
Impacted Third Molar ◽  
External Root Resorption ◽  
Lower Jaw ◽  
Total Prevalence

Abstract External root resorption (ERR) of a tooth represents a process in which irreversible damage occurs to solid dental tissues, more precisely of the cement and dentin. External resorption occurs on the root surface or periodontal ligament, and it is manifested by the loss of cement and/or dentine. The prevalence of ERR of the second molar associated with an impacted third molar, based on retro-alveolar radiography and orthopantomography, ranges from 0.3% to 24.2%. The aim of this research was to analyze ERR of the upper and lower jaw associated with the impacted third molar by the application of the Come Beam Computed Tomography. This study included 96 third molars in the upper and lower jaw of a total of 46 analyzed patients’ images. Total prevalence of the second molar ERR associated with the impacted third molar was 8.82%. The second molar ERR was observed in 8 patients (7.84%). Frequency of the second molar ERR in the lower jaw is higher, and it is 8.2%, while in the upper jaw it is only 1% (r = 0.032). Impacted third molars associated with the second molar ERR were most frequently in horizontal (5.1%) and mesioangular (4.1%) position (p = 0.000). The second molar ERR could be avoided by the preventive extraction of mesioangular or horizontal third molars. An adequate decision on the extraction of impacted third molars must be made by the careful assessment of risks and benefits of this surgical intervention. Before the surgical intervention, an adequate care of the second molar, adequate restoration, endodontic treatment or root resection should be done if necessary.

scholarly journals Prevalence of impacted mandibular third molars among patients attending the dentomaxillofacial radiology clinic

2013 ◽  
Vol 25 (1) ◽  
Author(s):  
Sanjit Singh Munjit Singh ◽  
Suhardjo Sitam ◽  
Belly Sam
Keyword(s):  
Third Molar ◽  
Dental Arch ◽  
Third Molars ◽  
Panoramic Radiographs ◽  
Descriptive Research ◽  
The Third ◽  
Mandibular Third Molar ◽  
Impacted Mandibular Third Molars ◽  
Mandibular Third Molars

Introduction: The third molar is undoubtedly the most variable tooth in the human dentition, and also the most common tooth to become impacted due to it being the last tooth to erupt into the dental arch The aim of research is to obtain the prevalence of the mandibular third molar (M3) impaction among the patients attending the Radiology Clinic. Methods: The type of research conducted was a descriptive research. The sampling was purposive, drawn from a population of 1451 digital panoramic radiographs taken from January – December in the year 2010, of which 392 samples were included in the survey, with patient ages ranging between 18 – 59 years at time of exposure. The position of the M3’s was assessed using the Pell and Gregory and, Winter’s impaction classification. Results: The prevalence of impacted mandibular M3’s in this study is 76.8% overall. Of the impacted mandibular M3’s present, 76.1% were bilateral impactions and of these bilateral impactions 50.7% are similar in impaction classification. Of the mandibular M3’s examined, 40.1% are in a vertical angulation, 33.3% mesioangular, 23.5% horizontal and 3.1% distoangular. The three most common types of impaction according to the Pell and Gregory classification are IIB at 38.5%, IA at 36.8% and IIA at 18.8%. Conclusion: Prevalence of  mandibular third molar of the patients attending the Radiology Clinic is 76.8%.

scholarly journals External root resorption of second molars caused by impacted third molars: an observational study in panoramic radiographs

2018 ◽  
Vol 47 (1) ◽  
pp. 25-30
Author(s):  
Jhonatan Thiago LACERDA-SANTOS ◽  
Gélica Lima GRANJA ◽  
Jalber Almeida dos SANTOS ◽  
Julliana Cariry PALHANO-DIAS ◽  
José Cadmo Wanderley Peregrino de ARAÚJO-FILHO ◽  
...  
Keyword(s):  
Root Resorption ◽  
Young Patients ◽  
Third Molar ◽  
Third Molars ◽  
Chi Square ◽  
Cross Sectional ◽  
Exact Test ◽  
Panoramic Radiographs ◽  
Second Molar ◽  
External Root Resorption

Abstract Objective This research investigate the presence of external root resorption (ERR) in second molars caused by impacted third molars in panoramic radiographs, relating to the position of third molars according to classification of Winter, Pell and Gregory. Material and method A cross-sectional, retrospective study using panoramic radiographs obtained from January 2014 to December 2015. The inclusion criterion was the presence of a second molar adjacent to an impacted third molar. Data were analyzed using descriptive and inferential statistics. Pearson's Chi-Square Test and Fisher's Exact Test (p≤0.05) were performed. Result The sample consisted of 584 panoramic radiographs, 356 (60.95%) of women, and 228 (39.05%) of men, the mean age was 25.31 years. The prevalence of ERR was 12.5%, and the group of 14-24 year olds was the most affected (p = 0.46). The presence of ERR was statistically higher in the mandible (42.1%) with p=0.01. The ERR located in the cervical (57.1%) and medium (58.8%) thirds was proportionally higher in the teeth with B2 (p=0.02) and mesio-angular positions (p=0.26). Conclusion The prevalence of ERR in second molars, caused by impacted third molars, was shown to be similar to results found in the literature, with no gender preference, this affects young patients, occurring frequently in mandible teeth, and presents greater severity in the cervical and middle thirds. The B2 and mesio-angular positions were more prone to ERR.

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