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ISSN 2395-9215 (Print)
Órgano Oficial de Difusión de la Facultad de Odontología de la UNAM

2015, Number 4

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Rev Mex Ortodon 2015; 3 (4)

Orthopaedic correction of an anterior cross-bite

Ruiz LCC, Sáez EG

Language: Spanish
References: 6
Page: 239-248
PDF size: 547.68 Kb.


ABSTRACT

Anterior cross-bites are common in growing patients due to different etiological factors such as: injury to the primary incisors with displacement of the permanent teeth; exfoliation of permanent incisors and palatal deviation because of a collapse in the premaxilla; supernumerary teeth and arch length deficiency. Objectives: To present a case of an anterior crossbite orthopaedic correction. Case report: An 11- year- old male patient was referred to the Orthodontics Clinic with an anterior crossbite and dental avulsion of a mesiodens due to trauma. The patient presented a dolichofacial pattern, a skeletal Class I relationship, horizontal mandibular growth, Class I molar relationship and retrusive maxillary and mandibular incisors. Treatment: First phase: Orthopaedics. Second phase: Orthodontics. An appliance similar to the Bite Block with a hyrax expansion screw placed parallel to the mid-palatal suture and a facial mask were constructed. Results: The patient´s anterior crossbite was corrected. Maxillary parameters were evaluated in relation to the Steiner, Jaraback and Ricketts analysis; SNA angle was increased by 4o, the convexity increased by 3 mm and the SNB angle, by 1o. Dental parameters showed that the interincisal angle decreased by 1o whereas SN/1 sup angle was increased by 8o. The patient´s soft tissues showed a positive change, which favoured the profile.


REFERENCES

  1. Proffit W. Ortodoncia contemporánea. Madrid, Hancourt Brace de España, S.A. 2001, p. 742.

  2. Mayor PW. Treatment of anterior cross-bites in the early mixed dentition. J Can Dent Assoc. 1992; 58 (7): 574-5-578-9.

  3. MacNamara JS. Tratamiento ortodóntico y ortopédico en la dentición mixta. Expansión del maxilar. Estados Unidos. Edt Needham Press. 1995, 121-149.

  4. Sari S, Gokalp H, Aras S. Correction of anterior dental crossbite with composite as an inclined plane. Int J Paediatr Dent. 2008; 11 (3): 201-208.

  5. Bengi AO, Gürton AO, Okcu KM, Aydintug YS. Premaxilary distraction osteogenesis with an individual tooth-borne appliance. Angle Orthod. 2004; 74: 420-431.

  6. Canut JA. Ortodoncia clínica. Barcelona: Masson-Salvat Odontología; 1992, pp. 613-624.




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