Radiographic Assessment for Predicting the Mandibular Third Molar Eruption after Orthodontic Treatment in First Premolar Extraction Group and Non-Extraction Group: A-retrospective Study

Patel, Arth; Deshmukh, Suhas; Naik, Choubarga; Jethe, Sandeep; Patel, Kamlesh

doi:10.15713/ins.ijdhc.2

Cited by 3 publications

(1 citation statement)

References 19 publications

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“…They found that premolar extractions had a positive influence on the developing third molar angulations and non-extraction therapy did not have any adverse effects. Another study by Golovcencuet L et al 12 radiologic assessment of mandibular third molar before and after orthodontic treatment. They concluded that third molar angulation in relation with the adjacent second lower molar has significant prognostic value regardless of type of treatment, with or without extraction of premolar.…”

Section: Discussionmentioning

confidence: 99%

Angular changes of impacted mandibular third molars and developing mandibular third molars in premolar extraction cases- A retrospective radiographic study

Velachery¹,

Backer²,

Shetty³

et al. 2021

IJOHD

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Background: Successful eruption of impacted third molars requires the establishment of proper mesiodistal angulation as the tooth erupts into the oral cavity. Extraction of premolars in orthodontic cases may favour the eruption of third molars. Materials and Methods: Patients were divided into 2 categories. Category I -Radiographs of patients undergone orthodontic treatment with third molar roots formation completed and category II -Radiographs of patients undergone orthodontic treatment with third molar roots formation uncompleted. The samples consisted of 24 third molars in each category with a total of 48 samples. On pre operative and post operative OPGs linear and angular measurements were measured. Results: There was statistically significant difference in the space between the anterior border of the ramus and the second molar. But there was no significant difference in the angulation of the third molars. So even if there is a gain of space for the third molars to erupt, the changes in the angulations of third molar does not favour the spontaneous eruption after the orthodontic treatment with extraction of 1 s t premolar. Conclusion: Extraction of 1 s t premolar has positive influence on the space available for the third molar eruption. But there are no changes in the angulations of the third molars that would in turn help in the eruption.

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Section: Discussionmentioning

confidence: 99%

Angular changes of impacted mandibular third molars and developing mandibular third molars in premolar extraction cases- A retrospective radiographic study

Velachery¹,

Backer²,

Shetty³

et al. 2021

IJOHD

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The effect of first and second premolar extractions on third molars: A retrospective longitudinal study

Miclotte

Grommen²,

Llano-Pérula

et al. 2017

Journal of Dentistry

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Assessment of lower third molar space: A comparative radiographic study

Aoun

Husseini

Younes

et al. 2022

Dentomaxillofacial Radiology

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Objective: The aim of this study was to assess lower third molar space using four different radiographic reconstructed Cone Beam Computed Tomography (CBCT) images: orthopantomogram, lateral cephalogram, multiplanar CBCT and a newly introduced three-dimensional (3D) simulation technique. Methods: The CBCT scans of 32 individuals (20.97 ± 2.152 years) with a total of 50 lower third molars were collected and analyzed. The ratio between the necessary space and available space for lower third molars was calculated on each radiographic reconstructed image. Repeated-measure analysis of variance followed by multiple comparison tests were used. Results: The mean ratio was significantly smaller with cephalograms (0.611 ± 0.263), followed respectively by orthopantomograms (0.756 ± 0.221), multiplanar CBCT (0.789 ± 0.191) and 3D simulation technique (0.807 ± 0.193) (p < 0.001). The lowest mean difference was recorded between multiplanar CBCT and 3D simulation technique (0.017). Intra class correlation coefficient was strong (>0.90) for all techniques except cephalograms. Conclusions: The assessment of the lower third molar space differs according to the adopted imaging technique. 3D simulation technique is a useful novel technology that allows an exploration of the crown in many different dimensions and orientations, giving more predictable results than the conventional methods.

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Radiographic Assessment for Predicting the Mandibular Third Molar Eruption after Orthodontic Treatment in First Premolar Extraction Group and Non-Extraction Group: A-retrospective Study

Cited by 3 publications

References 19 publications

Angular changes of impacted mandibular third molars and developing mandibular third molars in premolar extraction cases- A retrospective radiographic study

Angular changes of impacted mandibular third molars and developing mandibular third molars in premolar extraction cases- A retrospective radiographic study

The effect of first and second premolar extractions on third molars: A retrospective longitudinal study

Assessment of lower third molar space: A comparative radiographic study

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