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| Growing orthopedic treatment of mandibular retrusion of the tongue position and the impact of oropharyngeal airway
Words] glass ionomer cement; orthodontic bracket; binder [CLC] R783.5 [Document code] A [Article ID] 1003-1634 (2008) 03-0170-02 enamel adhesive bond orthodontic bracket on the tooth surface to be carried out prior to etching, after etching the surface of enamel demineralization phenomenon often leads to irreversible enamel damage. In recent years, the use of glass ionomer cement for bracket bonding to achieve better results, reported as follows: Materials and Methods 1 Materials bracket the experimental group binder for the glass ionomer cement (Shanghai Dental Material Factory). The control group for the orthodontic bracket adhesive binder non-mixing (Hangzhou West Lake Barre Dental Material Factory). 2 2003.3 ~ 2007.5 selection of clinical data in the orthodontic clinic of our hospital 117 cases of 1871 teeth were randomly divided into experimental group 57 cases, 912 teeth, 252 of which the first premolars (maxillary 181, jaw 71),mbt scarpe prezzi, second premolar 191 (163 maxillary and mandibular 2  , incisors 469 (309 on the incisors and lower incisors 160). Control group, 60 patients, 959 teeth, 266 of which the first premolar (197 maxillary and mandibular 69), second premolar 140 (83 maxillary, 57 mandibular), 553 incisors (25 central incisors 366, 187 lower incisors). 3 Methods Experimental groups: with a small cotton ball dipped in 3% hydrogen peroxide tooth surface cleaning,new balance outlet, washing, every wet, dry,asics shoes online, and then sterilized with 75% ethanol wipe the tooth surface, drying, keep the tooth surface dry, glass ionomer tune into a certain proportion After drawing-shaped bracket placed on the base surface, the light pressure on the tooth surface bracket, remove excess adhesive and let it naturally solidified layer of Vaseline applied around it to keep the tooth surface drying 15min. Control group: with a small cotton ball dipped in 3% hydrogen peroxide cleaning teeth, washing, across the wet, dry, acid etching the tooth surface 30s, and then washed, separated from the wet, wipe with 75% ethanol,timberland scarpe, after drying the tooth surface sterilized, non-adjusted mix binder placed in brackets basement, soft reduction in the brackets on the teeth, remove excess adhesive, to keep the tooth surface dry and 3 ~ 5min. 4 bonding effect for all patients assessed standard edgewise, and the brackets were bonded after 3 months,asics tiger shoes, 1 year, 2 years return visit to observe the failure rate of brackets. Results All patients were followed up for 2 years, 3 months, 1 year, 2 years wrapped in a return visit when the concept of bracket loss rate of the two groups were compared (n.%) of all time periods, different teeth, between the two groups , P> 0.05r bream 252-259. [5] HaradaK, HigashinakagawaM, OmuraK. Mandibularlengtheningbydistractionosteogenesisfortreatmentofobstructivesleepapneasyn-drome: acasereportD]. Cranio, 2003,21 (1) :61-67. [6] TumbullNR, BattagelJM. I1leeffectsoforthognathicsurgeryonpharyngealairwaydimensionsandqualityofsleep [J]. JOrthod, 2000,27 (3) :235-247. [7] Gao H, Xiao Danna, Zhao River, and so on. FrankeII type of appliance on upper airway of children missing like image diameter mouth]. Oral Medicine, 2003,21 (2) l16 a l17. [8] HiyamaS, TakashiO, IshiwataT, eta1. Supinecephalometricstudyonsleeprelatedchangesinupperairwaystructuresinnormalsub-ieet ~ D]. Sleep ,2000,23:783-790. [9] BaikUB, SuzukiM, IkedaK, eta1. Relationshipbetweencephalo-metriccharacteristicsandobstructivesitesinobstructivesleepapneasyndrome [J]. Angle-Orthod, 2002,72 (2) :124-134. Received Date: 20o7-10-05
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