Influence of First Premolar Extraction on Mandibular Third Molar Angulation

Jain, Suruchi; Valiathan, Ashima

doi:10.2319/100708-525r.1

Cited by 49 publications

(45 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Our results coincide with those obtained by Haavikko et al (24) who claims that extractions of mandibular premolars accelerated, but did not favour, the eruption of the mandibular third molars. Nevertheless, other authors such as Richardson et al (5), Kim et al (6) or Jain et al (25), observed that the extraction of premolars made more space in the molar area and, therefore, improved the angulation of the mandibular third molar compared to patients treated without extractions. Changes in the gonial angle.…”

Section: Discussionmentioning

confidence: 96%

Influence of first and second premolar extraction or non-extraction treatments on mandibular third molar angulation and position. A comparative study

Tarazona¹,

Paredes²,

Llamas³

et al. 2010

Med Oral

View full text Add to dashboard Cite

The mandibular third molar (3M) is the tooth that is most often impacted, with lack of space being one of the reasons. In some orthodontic treatments, premolars are extracted in order to create space. The aims of our study are: firstly, to assess the changes in the angulation and position of the 3M in cases treated either with or without extraction of the first or second premolars; secondly, to analyse the variation in the gonial angle and the degree of inclusion of the 3M; and lastly, to establish a predictive impaction model for 3M. This study included 88 patients: 28 patients treated with extractions of first premolars, 30 with second premolars and 30 without. The initial and final orthopantomography was analysed and the angulation of the 3M was measured, a new variable being created to determine the degree of 3M inclusion in the mandibular ramus. The results show that the angulation of 3M improves with time, regardless of treatment, and presents a greater disinclusion in cases treated with extractions. The gonial angle tends to diminish with age in all cases. The conclusions suggest that other factors may influence the angulation and position of 3M and that it is not possible to establish a predictive impaction model.

show abstract

Section: Discussionmentioning

confidence: 96%

Influence of first and second premolar extraction or non-extraction treatments on mandibular third molar angulation and position. A comparative study

Tarazona¹,

Paredes²,

Llamas³

et al. 2010

Med Oral

View full text Add to dashboard Cite

show abstract

“…In the group of male subjects, mesioangulation of the third mandibular molar was observed, this being significantly greater on the right side. However, some authors such as Jain (22) (2009) and Ahmed (23) (2011) have found large differences in this angle between patients regardless of whether or not they had performed premolar extractions.…”

Section: Discussionmentioning

confidence: 99%

Effect of orthodontic treatment involving first premolar extractions on mandibular third molar angulation and retromolar space

Mendoza-García¹,

Jiménez²,

García-Rocha³

et al. 2017

J Clin Exp Dent

View full text Add to dashboard Cite

BackgroundThird molars present more problems than other teeth because they are the last teeth to erupt, and so it is important to assess their development when designing an orthodontic treatment plan. The aim of this study was to compare the angulation of the mandibular third molar and retromolar space before and after orthodontic treatment in cases involving first premolar extraction.Material and Methods76 patients, 59 women (77.63%) and 17 men (22.36%), were recruited from the Orthodontics Clinic at Benemérita Universidad Autónoma de Puebla (Mexico). Panoramic radiographs were analyzed before and after orthodontic treatment that included first premolar extractions, measuring retromolar space (RS) and the angles formed by the intersection of the axes of the third and second molar (α) and the intersection of the axis of the mandibular plane and third molar (β).ResultsThe data obtained underwent statistical analysis. The angle α and β showed statistically significant differences on the left side in women. In men, only the right side α angle showed significant differences. Retromolar space increased significantly on both sides for both sexes.ConclusionsThird molar angulation presents different behaviors between men and women, with greater verticalization in women. Key words:Third molar, retromolar space, orthodontics.

show abstract

“…In this study, 20 teeth were treated using a combination of surgical exposure and orthodontic traction. Some authors such as Kim et al (20), Jain et al (21) observed that prob ability of mandibular third molar eruption is related to premolars extraction. In contrast, Tarazona et al (22) demonstrated that the angulation of third molar improves with time regardless of treatment, and presents a greater disinclusion in cases treated with extractions.…”

Section: Discussionmentioning

confidence: 99%

Prevalence of impacted premolars in a Turkish population and considerations for surgical treatment

Şimşek-Kaya¹,

Melih-Ömezli²,

Yapıcı³

et al. 2011

Med Oral

View full text Add to dashboard Cite

Objective: The aim of this study was to identify the prevalence, associated pathology and symptoms, and treatment of impacted premolars in a Turkish population. Study Design: This retrospective study examined panoramic radiographs and clinical records of 9,000 patients who presented consecutively at our oral and maxillofacial surgery clinics between January 1998 and January 2009. In addition to demographic data (patient sex and age), data was compiled on the number and location of impacted missing maxillary and mandibular premolars, retained deciduous molars, associated pathologies and symptoms, and treatment methods. Results: A total of 105 impacted maxillary or mandibular premolars were observed in 93 patients (1.03%). Of these, 48 (51.6%) were female (age range: 13-57 years) and 45 (43.4%) were male (age range: 13-58 years). Impacted mandibular second premolars accounted for 55.2% (n=58) of all impacted premolars. Migration was observed in only 11.83% of patients (n=11). Pathological changes and symptoms were noted in 15.05% of patients. Conclusion: Our results suggest that the prophylactic extraction of non-migrated impacted premolars may not be necessary. If the patient is cooperative, a "wait and see" approach may be preferable. Orthodontic or prosthetic treatment options should also be considered when planning treatment of non-migrated impacted premolars. Migrated impacted premolars should be kept under observation and should only be removed if they are associated with pathology or if extraction is required for prosthetic or orthodontic treatment.

show abstract

Influence of First Premolar Extraction on Mandibular Third Molar Angulation

Cited by 49 publications

References 14 publications

Influence of first and second premolar extraction or non-extraction treatments on mandibular third molar angulation and position. A comparative study

Influence of first and second premolar extraction or non-extraction treatments on mandibular third molar angulation and position. A comparative study

Effect of orthodontic treatment involving first premolar extractions on mandibular third molar angulation and retromolar space

Prevalence of impacted premolars in a Turkish population and considerations for surgical treatment

Contact Info

Product

Resources

About