Treatment for Class II Division I Malocclusion Using Cervical Headgear and Hotz Appliance: A Case Report Cho, Yongjae; Kim, Seonmi; Choi, Namki;
Many types of orthopedic appliances have been developed and used for the treatment of class II malocclusion in pediatric dentistry. Headgear is one of the extraoral appliances, which is used for the purpose of preventing the overgrowth of maxilla. Hotz appliance is used in couple with a cervical headgear for the expansion of maxilla and retraction of maxillary incisors. This case report is about the orthodontic treatment of three patients with class II division I malocclusion. These young patients were given orthopedic treatment in combination with a cervical headgear and Hotz appliance. After the treatment using these extraoral and intraoral appliances, succeeding treatments were practiced considering individual needs as follows: fixed orthodontic appliance for mandibular anterior crowding, Class II activator for retention and additory orthopedic treatment and the retention with Hotz appliance. Young patients with Class II division I malocclusion reported in this study received the orthodontic treatment using a cervical headgear and Hotz appliance as well as appropriate succeeding treatment afterward. All patients received improved convex profiles and lip protrusions by retracting maxilla and maxillary incisors.
Cervical headgear;Hotz appliance;Class II malocclusion;Orthodontic treatment;
Choi EJ, Jung TR, Kim CC, Kim YJ : The changes in practice pattern and patient distribution for the last 5 years (2000-2005) in the department of pediatric dentistry at seoul national university dental hospital. J Korean Acad Pediatr Dent, 33:673-677, 2006.
Son YJ, Hyun HK, Kim YJ, Kim JY : The changes in practice patterns for the last 8 years (2001-2008) in the department of pediatric dentistry, seoul national university dental hospital. J Korean Acad Pediatr Dent, 37:97-101, 2010.
Park KT : Practical approaches in early orthodontic treatment. 1st ed. DaehanNarae Publishing, Inc. 267, 2009.
Yang KH, Choi NK : The study on the orthodontic patients who visited department of pediatric dentistry, chonnam national university hospital. J Korean Acad Pediatr Dent, 27:113-121, 2000.
Jung MH : Current trends in orthodontic patients in private orthodontic clinics. Korean J Orthod, 39:36-42, 2009.
Park KT : Practical approaches in early orthodontic treatment. 1st ed. DaehanNarae Publishing, Inc. 267-270, 2009.
O'Brien K : Is early treatment for Class II malocclusion effective? Results from a randomized controlled trial. Am J Orthod Dentofacial Orthop, 129:S64-65, 2006.
Firouz M, Zernik J, Nanda R : Dental and orthopedic effects of high-pull headgear in treatment of Class II division 1 malocclusion. Am J Orthod Dentofacial Orthop, 102:197-205, 1992.
Godt A, Berneburg M, Kalwitzki M, Goz G : Cephalometric analysis of molar and anterior tooth movement during cervical headgear treatment in relation to growth patterns. J Orofac Orthop, 69:189-200, 2008.
Gautam P, Valiathan A, Adhikari R : Craniofacial displacement in response to varying headgear forces evaluated biomechanically with finite element analysis. Am J Orthod Dentofacial Orthop, 135:507-515, 2009.
Park KT : Practical approaches in early orthodontic treatment. 1st ed. DaehanNarae Publishing, Inc. 334-337, 2009.
Shpack N, Brosh T, Mazor Y et al. : Long- and short-term effects of headgear traction with and without the maxillary second molars. Am J Orthod Dentofacial Orthop, 146:467-476, 2014.
Gabriel HF : Motivation of the headgear patient. Angle Orthod, 38:129-135, 1968.
Clemmer EJ, Hayes EW : Patient cooperation in wearing orthodontic headgear. Am J Orthod, 75:517-524, 1979.
Carleton SL, Regennitter FJ, Yancey JM : The role of the headgear calendar in headgear compliance. Am J Orthod Dentofacial Orthop, 104:387-394, 1993.
Proffit WR : The timing of early treatment: an overview. Am J Orthod Dentofacial Orthop, 129:S47-49, 2006.
Dolce C, McGorray SP, Wheeler TT : Timing of Class II treatment: skeletal changes comparing 1-phase and 2-phase treatment. Am J Orthod Dentofacial Orthop, 132:481-489, 2007.
Cancado RH, Pinzan A, Canuto CE : Occlusal outcomes and efficiency of 1- and 2-phase protocols in the treatment of Class II Division 1 malocclusion. Am J Orthod Dentofacial Orthop, 133:245-253, 2008.
von Bremen J, Pancherz H : Efficiency of early and late Class II Division 1 treatment. Am J Orthod Dentofacial Orthop, 121:31-37, 2002.
Tulloch JF, Phillips C, Proffit WR : Benefit of early Class II treatment: progress report of a two-phase randomized clinical trial. Am J Orthod Dentofacial Orthop, 113:62-72, 1998.