scholarly journals Eruption Guidance of Horizontally Impacted Permanent First Molar with Primary Retention of Primary Second Molars: Case Reports

2020 ◽  
Vol 47 (2) ◽  
pp. 219-227
Author(s):  
Garam Yoon ◽  
Nanyoung Lee ◽  
Sangho Lee ◽  
Myeongkwan Jih
Keyword(s):  
Oral Cavity ◽  
Developmental Process ◽  
Case Reports ◽  
Tooth Eruption ◽  
Alveolar Process ◽  
Primary Molar ◽  
Second Molar ◽  
Mandibular Second Molar ◽  
Mandibular First Molar ◽  
Tooth Migration

Tooth eruption involves a complex developmental process of tooth migration from the dental follicular origin to the final occlusion position in the oral cavity via the alveolar process. Disturbance of tooth eruption can occur at any point in a series of eruption stages; however, horizontal impaction of the mandibular first molar and primary retention of the primary mandibular second molar are rarely observed simultaneously. This study describes the treatment for two cases of horizontally impacted first molar with primary retention of primary molar. The primary retention of the primary mandibular second molar was extracted, and orthodontic traction was applied to the horizontally impacted primary mandibular first molar. Subsequently, displacement of the premolar tooth bud was improved and space regaining for eruption was achieved, guiding to normal eruption of the first molar.

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.

Delayed Spontaneous Eruption of Severely Infraoccluded Primary Second Molar: Two Case Reports

2020 ◽  
Vol 44 (3) ◽  
pp. 185-189
Author(s):  
Na-Young Oh ◽  
Soon-Hyeun Nam ◽  
Jae-Sik Lee ◽  
Hyun-Jung Kim
Keyword(s):  
Treatment Option ◽  
Treatment Modality ◽  
Watchful Waiting ◽  
Case Reports ◽  
Early Age ◽  
Primary Molar ◽  
Second Molar ◽  
Permanent Molar ◽  
Secondary Failure ◽  
Suitable Treatment

Infraocclusion occurs at an early age and becomes worse with age, causing increased damage in young children. Extraction of affected teeth is the preferred treatment modality for prevention of possible complications. It is rare for a primary molar to temporarily exhibit secondary failure of eruption, followed by regeneration of full eruptive capacity. This report was written to describe two patients who experienced spontaneous eruption of an infraoccluded primary molar at approximately 7 years of age. While watchful waiting is not always a suitable treatment option, we propose that extraction be deferred until the first permanent molar erupts, unless significant problems occur.

scholarly journals Segundos molares mandibulares permanentes impactados en pacientes de 8 a 15 años del programa de presupuesto participativo de Medellín, Colombia / Impacted Permanent Lower Second Molar in 8-to-15-Year-Old Patients...

2018 ◽  
Vol 36 (77) ◽  
Author(s):  
Vanessa David-Pérez ◽  
Laura Milena Ospina-Tabares ◽  
Matdel Orfindey Carmona-Salcedo ◽  
Brayan Joseth Muriel-Urrego ◽  
Gabriel Emilio Espinal-Botero ◽  
...  
Keyword(s):  
Early Diagnosis ◽  
Descriptive Statistics ◽  
Occlusal Plane ◽  
Radiographic Analysis ◽  
Old Patients ◽  
Panoramic Radiographs ◽  
Second Molar ◽  
Angular Measurements ◽  
Mandibular Second Molar ◽  
Mandibular First Molar

RESUMEN. Antecedentes: La impactación de segundos molares mandibulares permanentes (2MM) se presenta con variaciones considerables según el grupo poblacional. Además de los problemas asociados a esta alteración, podrían requerir tratamientos múltiples y complejos. Por lo tanto, el diagnóstico temprano de una alteración en el proceso de erupción del 2MM es imperativo para reducir el riesgo de impactación, la dificultad de tratamiento y la aparición de problemas asociados en las poblaciones. Propósito: Describir las características de impactación del 2MM en pacientes de 8 a 15 años en una muestra de Medellín, Colombia. Métodos: En este estudio descriptivo retrospectivo se evaluaron 1756 radiografías panorámicas de las cuales 95 presentaron impactación de 2MM. Estas se analizaron según sexo, localización en la mandíbula y tipo de inclinación, y se realizaron 13 mediciones lineales y angulares para identificar parámetros dentoesqueléticos característicos del lado de la impactación. Para el análisis de los datos se utilizó estadística descriptiva y la prueba t (p<0,05). Resultados: La prevalencia de impactación fue del 5,4 %. La impactación bilateral con inclinación mesial fue la más frecuente. El lado izquierdo predominó en impactaciones unilaterales. El único parámetro dentoesquelético característico de impactación fue el ángulo de inclinación del 2MM con respecto al plano oclusal, con mayor severidad en el lado izquierdo. Conclusiones: Un ángulo igual o mayor a 112,94° podría indicar riesgo de impactación contra el primer molar mandibular permanente. Por lo tanto, este parámetro debería ser incluido en el análisis radiográfico para el diagnóstico temprano de impactación del 2MM. ABSTRACT. Background: Permanent mandibular second molar (MM2) impaction has considerable variations depending on the population. In addition to the problems associated to this condition, it could require multiple and complex treatments. Therefore, early diagnosis of any MM2 eruption alteration is mandatory. This approach could reduce the risk of impaction, the difficulty of treatment, and the occurrence of associated problems in the population. Purpose: To describe the characteristics of MM2 impaction in an 8-to-15-year-old sample of patients from Medellin, Colombia. Methods: 1756 panoramic radiographs were evaluated in this descriptive retrospective study. 95 had impacted MM2s. These radiographs were analyzed according to sex, localization in the mandible, and type of inclination. 13 lineal and angular measurements were taken to identify characteristic dentoskeletal parameters of the impaction side. Descriptive statistics and t test were used (p< 0.05) for data analysis. Results: The prevalence of impaction was 5.41 %. Mesial bilateral impaction was more frequent. The left side was predominant in unilateral impactions. The only dentoskeletal characteristic of impaction was the MM2 inclination angle with respect to the occlusal plane, with higher severity on the left side. Conclusion: A > 112.94° angle could indicate impaction risk against the permanent mandibular first molar. Therefore, this parameter should be included in the radiographic analysis for MM2 impaction early diagnosis.

scholarly journals A Geminated Mandibular Second Molar—A Case Report

Reports ◽  
2021 ◽  
Vol 4 (4) ◽  
pp. 31
Author(s):  
Asha Pandya-Sharpe ◽  
James Puryer
Keyword(s):  
Case Report ◽  
Oral Cavity ◽  
Early Recognition ◽  
Posterior Region ◽  
Unusual Presentation ◽  
Preventative Care ◽  
Dental Anomalies ◽  
Second Molar ◽  
Mandibular Second Molar ◽  
Double Teeth

Fusion and gemination are not entirely uncommon dental anomalies that may also be named ‘double teeth’. This is due to their unusual presentation in a twin-like fashion. Teeth with these irregularities may appear clinically similar, presenting as large and bulbous in shape with unusual anatomy and fissure patterns. The exact aetiology of these anomalies is uncertain, but many potential local or systemic disturbances during the morphodifferentiation stage of odontogenesis have been considered. Gemination occurs rarely in the permanent dentition and even less frequently in the posterior region of the oral cavity. This report presents a case of a geminated mandibular second molar and discusses the importance of early recognition and diagnosis of such teeth so that adequate preventative care and treatment can be provided.

scholarly journals MANDIBULAR SECOND MOLAR IMPACTION - LITERATURE REVIEW AND CASE REPORTS

2017 ◽  
Vol 3 (1) ◽  
pp. 70
Author(s):  
Deyan Neychev ◽  
Ivan Chenchev ◽  
Dimitar Atanasov
Keyword(s):  
Literature Review ◽  
Case Reports ◽  
Second Molar ◽  
Mandibular Second Molar

scholarly journals Severe Impaction of the Primary Mandibular Second Molar Accompanied by Displacement of the Permanent Second Premolar

2015 ◽  
Vol 2015 ◽  
pp. 1-5 ◽  
Author(s):  
Junko Matsuyama ◽  
Shoko Kinoshita-Kawano ◽  
Sachiko Hayashi-Sakai ◽  
Tomoe Mitomi ◽  
Tomiko Sano-Asahito
Keyword(s):  
Permanent Tooth ◽  
Permanent Teeth ◽  
Primary Tooth ◽  
Second Primary ◽  
Primary Molar ◽  
Second Molar ◽  
First Case ◽  
Tooth Impaction ◽  
Normal Functional ◽  
Mandibular Second Molar

Tooth impaction is defined as any tooth that fails to erupt into a normal functional position and remains unerupted beyond the time at which it should normally erupt. Reports of impaction and eruption failure in primary teeth are relatively rare compared to permanent teeth. We report 2 rare cases where the second premolar was located on the occlusal side of the impacted mandibular second primary molar. In the first case, the succedaneous permanent tooth erupted after extraction of the primary tooth, fenestration, and traction. In the second case, the succedaneous permanent tooth erupted without fenestration or traction. Although the etiology of the tooth displacement was unknown in both cases, inhibition of the eruptive movement of the primary molar may have been associated with displacement of the succedaneous permanent premolar.

scholarly journals Uprighting an Impacted Permanent Mandibular First Molar Associated with a Dentigerous Cyst and a Missing Second Mandibular Molar—A Case Report

2019 ◽  
Vol 7 (3) ◽  
pp. 63 ◽  
Author(s):  
Konstantina Tsironi ◽  
Emmanouil Inglezos ◽  
Emmanouil Vardas ◽  
Anastasia Mitsea
Keyword(s):  
Dentigerous Cyst ◽  
Interdisciplinary Approach ◽  
Patient Comfort ◽  
Radiographic Evaluation ◽  
Bone Apposition ◽  
Second Molar ◽  
Mandibular Molar ◽  
Advantageous Position ◽  
Mandibular Second Molar ◽  
Mandibular First Molar

The purpose of this paper is to present a case of an impacted mandibular first molar associated with a dentigerous cyst and a missing mandibular second molar in an 11-year-old girl that was treated with combined surgical and orthodontic procedures. After clinical and radiographic evaluation, marsupialization of the cyst was decided, and a molar attachment was bonded on the buccal side of the impacted molar as a part of a full orthodontic treatment with fixed appliances. After 18 months of orthodontic traction, the molar was moved to a more advantageous position, and new bone apposition was observed on the site of the cystic lesion. Histological examination confirmed a dentigerous cyst. The molar was left to erupt spontaneously for 14 more months. A functional occlusion was finally achieved. An interdisciplinary approach proved to be an effective modality in treating a large dentigerous cyst associated with a deeply impacted first mandibular molar, presenting many advantages, such as new bone apposition and patient comfort.

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