2017
DOI: 10.1016/j.jdent.2017.03.007
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The effect of first and second premolar extractions on third molars: A retrospective longitudinal study

Abstract: This study stresses the importance of considering the possible effects of orthodontic treatment on third molars during treatment planning.

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Cited by 38 publications
(40 citation statements)
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“…Primarily, the anatomy of the mandible often embodies a narrow retromolar eruption space between the second molar and the anterior border of the ramus of the mandible, which can result in impaction of third molars . On the other hand, orthodontically indicated premolar extractions are widely proven to enlarge the retromolar space . Notwithstanding this, studies aiming to elucidate the association between mandibular molar angulations and eruption potential of third molars in a fully dentate jaw are scarce.…”
Section: Introductionmentioning
confidence: 99%
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“…Primarily, the anatomy of the mandible often embodies a narrow retromolar eruption space between the second molar and the anterior border of the ramus of the mandible, which can result in impaction of third molars . On the other hand, orthodontically indicated premolar extractions are widely proven to enlarge the retromolar space . Notwithstanding this, studies aiming to elucidate the association between mandibular molar angulations and eruption potential of third molars in a fully dentate jaw are scarce.…”
Section: Introductionmentioning
confidence: 99%
“…6,7 On the other hand, orthodontically indicated premolar extractions are widely proven to enlarge the retromolar space. 8,9 Notwithstanding this, studies aiming to elucidate the association between mandibular molar angulations and eruption potential of third molars in a fully dentate jaw are scarce. Since the majority of adolescents in Western society is subjected to orthodontic treatment at relatively early age, orthodontically requested panoramic radiographies may serve not only for diagnosis and follow-up, but also for prediction of third molar eruption.…”
Section: Introductionmentioning
confidence: 99%
“…In the literature there are several studies that correlate orthodontic treatments with the third molars. [11][12][13][14][15][16] The retromolar space and the position of the third molars change significantly during orthodontic treatment in growing patients, thus when orthodontic treatment with extraoral appliance is evaluated, there is a negative effect on the eruption space of the maxillary third molars, 15 while extractions of premolars have a positive effect on the eruption space of maxillary and mandibular third molars. 12 Therefore, it is important to take into account the position of the third molars during treatment planning, and above all to know how to conduct cases treated with extractions, considering the third molars position.…”
Section: Introduction and Statement Of The Problemmentioning
confidence: 99%
“…1,2 Many factors are involved in its impaction such as morphology, growth, retromolar space, anatomy and position. 3 Numerous of them have been researched, in order to predict its future impaction. 4,5 It has been stablished that some of those factors can be modify in order to enhance the third molar to erupt.…”
Section: Introduction and Statement Of The Problemmentioning
confidence: 99%
“…9 Recent studies that evaluated third molar angulation changes have shown significant differences in the third molar position especially after the extraction therapy. 3,10 However, some have not found that these changes were enough to avoid impaction, while others do affirm that eruption does occur. 11,12 Even though the existing literature, it has reported that the evidence available is still limited to confirm whether orthodontic treatment with premolar extraction can favor the angulation and subsequent eruption of the third molars, however, it highlights the possibility of a potential benefit.…”
Section: Introduction and Statement Of The Problemmentioning
confidence: 99%