The eruption tendency and changes of direction of impacted teeth following surgical exposure

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Abstract

Surgical exposure may be an integral part of orthodontic treatment of impacted teeth. In some cases the surgical procedure alone results in eruption and alignment of such teeth. The nature of the mechanism that starts concomitantly with the removal of covering tissues is not known. The aim of this investigation was to study factors associated with eruption as well as the eruption route of impacted and unerupted teeth following surgical exposure. The material consisted of 542 impacted teeth in 389 patients. The finding give strong support to the hypothesis that forces within surrounding tissues act upon the exposed crown in such a way as to direct it toward the area where the tissues were removed.

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Cited by (27)

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    Furthermore, root dilaceration was often observed in deeply impacted teeth, but such a change in root shape did not appear to be related to spontaneous eruption by surgical exposure. Öhman [27] tested 524 impacted teeth to assess whether the depth of impaction was related to the change in tooth axis angle following spontaneous eruption by surgical exposure and to the time required to complete eruption. All but 16 of these teeth erupted spontaneously within 24 months, and the tooth axis was altered as the tooth moved to the surgically opened window.

  • Periodontal surgery of the maxillary impacted canine for orthodontic purposes: Proposal for a surgical decision tree

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    the open technique: before closing the flap into its original position, a window 6 to 8 mm in diameter is opened in the palatal fibromucosa, facing the crown. With no bonding and allowing the tooth to evolve spontaneously, it has been observed a reactivation of the eruption with a reorientation of the axis of the tooth [17–19] (fig. 7). The main problem to be managed is the hemostasis because the incisions at the window cut through the terminal branches of the descending palatine artery issuing from the greater palatine foramen.

  • Periodontal surgery of the maxillary impacted canine for orthodontic purposes: Proposal for a surgical decision tree

    2017, International Orthodontics
    Citation Excerpt :

    the open technique: before closing the flap into its original position, a window 6 to 8 mm in diameter is opened in the palatal fibromucosa, facing the crown. With no bonding and allowing the tooth to evolve spontaneously, it has been observed a reactivation of the eruption with a reorientation of the axis of the tooth [17–19] (fig. 7). The main problem to be managed is the hemostasis because the incisions at the window cut through the terminal branches of the descending palatine artery issuing from the greater palatine foramen.

  • Identical unerupted maxillary incisors in monozygotic twins

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    Patient cooperation, length of treatment, potential risk of migration of adjacent teeth into the empty space, and patient age must be considered in treatment of a mesiodens. Some previous reports stated that spontaneous eruption occurs 18 to 24 months after removal of a mesiodens.16,17 These twins' impacted central incisors were fully erupted with orthodontic traction in 9 months, and the total treatment time was 29 months.

  • Postoperative prognosis of unerupted teeth after removal of supernumerary teeth or odontomas

    2007, American Journal of Orthodontics and Dentofacial Orthopedics
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    These results could clarify the findings of Witsenburg and Boering14 in which there was no relationship between age at surgery and spontaneous eruption. Our results agree with others.5,6,8,16-19 Mason et al9 found that teeth with immature roots (28%) and mature incisors (63%) were among those that needed additional surgery.

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Head of one of the orthodontic clinics of the Public Dental Service in Göteborg.

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Professor and Head of the Department of Oral Diagnosis, School of Dentistry, University of Göteborg.

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