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1.
Rev. Cient. CRO-RJ (Online) ; 4(1): 92-96, Jan.-Apr. 2019.
Article in English | LILACS, BBO - Dentistry | ID: biblio-1024328

ABSTRACT

Introduction: Maxillary protraction with or without rapid maxillary expansion (RME) is the therapyof choice for early skeletal Class III malocclusion caused by maxillary deficiency. Objective: To report a clinical case of rapid maxillary expansion and constriction with maxillary protraction in boy with skeletal Class III at mixed dentition. Report: A boy aged 9 years and 3 months, with skeletal Class III malocclusion and anterior crossbite of -3mm was treated with a protocol of maxillary expansion and constriction by Hyrax expander associated with maxillary protraction by Petit facial mask. For 4 days, the expander was opened by 2/4 turn in the morning and closed by 2/4 turn in the evening. Elapsed that period, the boy wore the face mask delivering 500N force, for 14 hours per day, for 3 months. After overcorrection, the mask was used during the night delivering a 300N force. Results: The treatment achieved a 2.5mm overjet, with good maxilla- andible transversal relationship and good facial profile. Conclusion: The protocol of maxillary expansion and constriction followed by maxillary protraction with Petit mask was effective to correct the anterior crossbite and the early skeletal Class III malocclusion caused by anterior- osterior maxillary deficiency.


Introdução: A protração maxilar associado ou não à expansão rápida da maxila (ERM) apresenta-se como terapia de escolha de maloclusão de Classe III esquelética por deficiência maxilar numa fase precoce da vida. Objetivo: Relatar caso clínico de expansão e constrição rápida da maxila com protração maxilar em indivíduo Classe III esquelética com dentição mista. Relato: Paciente com 9 anos e 3 meses de idade, maloclusão de Classe III esquelética e mordida cruzada anterior de -3mm foi tratado com expansor do tipo Hyrax, usando protocolo de expansão e constrição da maxila associada a tração reversa com máscara facial de Petit. Durante 4 dias foram realizadas expansão do disjuntor em 2/4 de volta pela manhã e constriçãode 2/4 de volta pela noite. Após esse período o paciente utilizou a máscara facial com força de 500N por um período de 14 horas por dia, durante 3 meses. Alcançada a sobrecorreção a máscara foi utilizada durante o período noturno com força de 300N. Resultados: Observou-se sobressaliência de 2,5mm, boa relação transversal interarcos e bom perfil facial. Conclusão: O protocolo de expansão e constrição maxilar seguido de tração reversa com máscara de Petit foi eficaz na correção da mordida cruzada anterior de indivíduo com maloclusão de Classe III esquelética precoce por deficiência antero-posterior da maxila.


Subject(s)
Orthodontics , Orthodontic Appliances , Orthodontics, Corrective , Palatal Expansion Technique , Dentition, Mixed , Malocclusion , Malocclusion, Angle Class III
2.
Vet Ital ; 53(3): 251-254, 2017 Sep 30.
Article in English | MEDLINE | ID: mdl-29152707

ABSTRACT

Ethylene glycol (EG) is a well known toxic compound, the assumption of which can be fatal to pet animals as well as to humans. Limited information is available on the pathological features of EG poisoning in pet animals, with special emphasis on cats. Twenty-five cats with histologically confirmed EG intoxication were retrospectively investigated, in order to define more precisely the gross pathological findings and improve the diagnostic process. Furthermore, a brief comparison with the lesions reported in EG-poisoned human patients and dogs was also made.


Subject(s)
Ethylene Glycol/poisoning , Animals , Cats , Ethylene Glycol/toxicity , Humans , Poisoning/pathology , Retrospective Studies
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