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Induced ankylosis of a primary molar for skeletal anchorage in the mandible as alternative to mini-implants.

Angelopoulou MV, Koletsi D, Vadiakas G, Halazonetis DJ - Prog Orthod (2015)

Bottom Line: Orthodontic mini-implants have become a popular and successful way to increase skeletal anchorage in such cases.Treatment plan involved removal of the primary teeth and mesial protraction of the posterior.At 6 months, the remaining space was closed using elastic chain on a rectangular stainless steel wire with tip-back bends, supported by class II elastics.

View Article: PubMed Central - PubMed

Affiliation: Division of Pediatric Dentistry, School of Dentistry, Marquette University, 1801 W Wisconsin Ave, 53233, Milwaukee, WI, USA, matinangelop@yahoo.gr.

ABSTRACT

Background: Mesial protraction of mandibular posterior teeth requires increased anchorage to avoid undesired tooth movements. Orthodontic mini-implants have become a popular and successful way to increase skeletal anchorage in such cases. However, mini-implants may cause injury to adjacent teeth or anatomical structures and may lead to tissue inflammation. Induced ankylosed primary teeth have been used in the past as abutments for the protraction of the maxilla in cases of maxillary retrognathism. However, this technique has not been described in the literature for the protraction of mandibular molars. The aim of this paper is to present, through a case report, an alternative to mini-implant devices to maximize anchorage in the mandible by inducing ankylosis on a primary molar.

Findings: A 13-year-old female with class II right malocclusion, deep bite, and congenitally missing right second premolars was referred for orthodontic treatment. Treatment plan involved removal of the primary teeth and mesial protraction of the posterior. In the mandible, ankylosis was induced on the retained primary second molar by extraction, bisection, replantation of the mesial part after endodontic treatment, and bonding of a rigid splint. Ankylosis was diagnosed after 10 weeks and a closing T-loop sectional wire was inserted to move the permanent first molar mesially. At 6 months, the remaining space was closed using elastic chain on a rectangular stainless steel wire with tip-back bends, supported by class II elastics.

Conclusions: Induced ankylosis of primary teeth can be an alternative to orthodontic mini-implants in selected cases, with minimal risks and maximum biocompatibility.

No MeSH data available.


Related in: MedlinePlus

Induced ankylosis technique a extraoral root canal treatment of the mesial root of the primary tooth, b hemisectomy of the primary tooth, and c replantation of the mesial part and splinting
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Fig3: Induced ankylosis technique a extraoral root canal treatment of the mesial root of the primary tooth, b hemisectomy of the primary tooth, and c replantation of the mesial part and splinting

Mentions: The ankylosis technique included extraction of the primary molar under local anesthesia followed by root canal treatment of the mesial root, performed ex vivo using a zinc oxide and eugenol sealer (Fig. 3a). The crown was then restored with composite resin and a 2-mm apicoectomy and hemisectomy of the tooth was performed (Fig. 3b). To induce ankylosis, we followed the management protocol for avulsed teeth with a closed apex and extraoral dry time exceeding 60 min [10]. Periodontal ligament cells were removed from the root surface with a scaler. Sixty minutes after the extraction of the tooth, the socket was irrigated with saline solution and the mesial root was replanted with slight pressure. To stabilize the tooth and assure ankylosis, a rigid splint was applied, extending from the right canine to the right first molar, using a 0.016″ × 0.022″ stainless steel (SS) rectangular wire (Fig. 3c).Fig. 3


Induced ankylosis of a primary molar for skeletal anchorage in the mandible as alternative to mini-implants.

Angelopoulou MV, Koletsi D, Vadiakas G, Halazonetis DJ - Prog Orthod (2015)

Induced ankylosis technique a extraoral root canal treatment of the mesial root of the primary tooth, b hemisectomy of the primary tooth, and c replantation of the mesial part and splinting
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4470929&req=5

Fig3: Induced ankylosis technique a extraoral root canal treatment of the mesial root of the primary tooth, b hemisectomy of the primary tooth, and c replantation of the mesial part and splinting
Mentions: The ankylosis technique included extraction of the primary molar under local anesthesia followed by root canal treatment of the mesial root, performed ex vivo using a zinc oxide and eugenol sealer (Fig. 3a). The crown was then restored with composite resin and a 2-mm apicoectomy and hemisectomy of the tooth was performed (Fig. 3b). To induce ankylosis, we followed the management protocol for avulsed teeth with a closed apex and extraoral dry time exceeding 60 min [10]. Periodontal ligament cells were removed from the root surface with a scaler. Sixty minutes after the extraction of the tooth, the socket was irrigated with saline solution and the mesial root was replanted with slight pressure. To stabilize the tooth and assure ankylosis, a rigid splint was applied, extending from the right canine to the right first molar, using a 0.016″ × 0.022″ stainless steel (SS) rectangular wire (Fig. 3c).Fig. 3

Bottom Line: Orthodontic mini-implants have become a popular and successful way to increase skeletal anchorage in such cases.Treatment plan involved removal of the primary teeth and mesial protraction of the posterior.At 6 months, the remaining space was closed using elastic chain on a rectangular stainless steel wire with tip-back bends, supported by class II elastics.

View Article: PubMed Central - PubMed

Affiliation: Division of Pediatric Dentistry, School of Dentistry, Marquette University, 1801 W Wisconsin Ave, 53233, Milwaukee, WI, USA, matinangelop@yahoo.gr.

ABSTRACT

Background: Mesial protraction of mandibular posterior teeth requires increased anchorage to avoid undesired tooth movements. Orthodontic mini-implants have become a popular and successful way to increase skeletal anchorage in such cases. However, mini-implants may cause injury to adjacent teeth or anatomical structures and may lead to tissue inflammation. Induced ankylosed primary teeth have been used in the past as abutments for the protraction of the maxilla in cases of maxillary retrognathism. However, this technique has not been described in the literature for the protraction of mandibular molars. The aim of this paper is to present, through a case report, an alternative to mini-implant devices to maximize anchorage in the mandible by inducing ankylosis on a primary molar.

Findings: A 13-year-old female with class II right malocclusion, deep bite, and congenitally missing right second premolars was referred for orthodontic treatment. Treatment plan involved removal of the primary teeth and mesial protraction of the posterior. In the mandible, ankylosis was induced on the retained primary second molar by extraction, bisection, replantation of the mesial part after endodontic treatment, and bonding of a rigid splint. Ankylosis was diagnosed after 10 weeks and a closing T-loop sectional wire was inserted to move the permanent first molar mesially. At 6 months, the remaining space was closed using elastic chain on a rectangular stainless steel wire with tip-back bends, supported by class II elastics.

Conclusions: Induced ankylosis of primary teeth can be an alternative to orthodontic mini-implants in selected cases, with minimal risks and maximum biocompatibility.

No MeSH data available.


Related in: MedlinePlus