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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/08/23 05:53:36」(JST)

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Crossbite is a form of malocclusion where a tooth (or teeth) has a more buccal or lingual position (that is, the tooth is either closer to the cheek or to the tongue) than its corresponding antagonist tooth in the upper or lower dental arch. In other words, crossbite is a lateral misalignment of the dental arches.

Terminology and classification

Crossbite can involve a single tooth or a group of teeth. It can be classified in anterior or posterior and bilateral or unilateral.

An anterior cross bite can be referred as negative overjet, and is typical of class III skeletal relations (prognathism).

Posterior crossbite is often correlated to a narrow maxilla and upper dental arch. A posterior cross-bite can be unilateral or bilateral. Unilateral cross-bite often determines a lateral shift of the mandibular position, which can become structural if left untreated for a long time during growth, leading to skeletal asymmetries. There are 3 types of crossbite : simple anterior, functional anterior, and skeletal anterior

Posterior crossbite is also known as "reverse articulation".^[1]

Treatment

There are several therapies that can be used to correct a cross bite: braces, quad helix, removable plates, clear aligner therapy, or a Delaire mask. The correct therapy should be decided by the orthodontist depending on the type and severity of the crossbite.

References

^ Rickne C. Scheid; Julian B. Woelfel (2007). Woelfel's dental anatomy: its relevance to dentistry. Lippincott Williams & Wilkins. pp. 379–. ISBN 978-0-7817-6860-3. Retrieved 22 April 2010.

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UpToDate Contents

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1. 小児における口腔習癖と口腔顔面の発達 oral habits and orofacial development in children
2. 小児における閉塞性睡眠時無呼吸疑いの評価 evaluation of suspected obstructive sleep apnea in children
3. 小児における閉塞性睡眠時無呼吸のマネージメント management of obstructive sleep apnea in children

English Journal

Clinical changes of TMD and condyle stability after two jaw surgery with and without preceding TMD treatments in class III patients.

Yoon SY1, Song JM1, Kim YD1, Chung IK1, Shin SH1; Pusan Korea Pusan National University.
Maxillofacial plastic and reconstructive surgery.Maxillofac Plast Reconstr Surg.2015 Feb 21;37(1):9. eCollection 2015.
BACKGROUND: This study are to identify the symptomatic changes and condylar stability after 2 jaw surgery without preceding treatments for Temporomandibular joints(TMJ) in class III patients with the TMJ symptoms; and to assess therapeutic effect of 2 jaw surgery and the necessity of preceding treat
PMID 25729744

Bimaxillary orthognathic surgery and condylectomy for mandibular condyle osteochondroma: a case report.

Park YW1, Lee WY1, Kwon KJ1, Kim SG1, Lee SK2.
Maxillofacial plastic and reconstructive surgery.Maxillofac Plast Reconstr Surg.2015 Feb 5;37(1):4. eCollection 2015.
Osteochondroma is rarely reported in the maxillofacial region; however, it is prevalent in the mandibular condyle. This slowly growing tumor may lead to malocclusion and facial asymmetry. A 39-year-old woman complained of gradual development of anterior and posterior unilateral crossbite, which resu
PMID 25664314

Oral habits--part 2: beyond nutritive and non-nutritive sucking.

Silva M1, Manton D2.
Journal of dentistry for children (Chicago, Ill.).J Dent Child (Chic).2015 Sep-Dec;81(3):140-6.
In addition to sucking habits, a range of other habits have been associated with short- and long-term dental and orthodontic problems. These habits include tongue thrusting and atypical swallowing, lip sucking, oral self-mutilation, mouth breathing, and bruxism. Although the association between form
PMID 25514258

Japanese Journal

Multidisciplinary Treatment of Peripheral Osteoma Arising from Mandibular Condyle in Patient Presenting with Facial Asymmetry

Nojima Kunihiko,Niizuma-Kosaka Fumiko,Nishii Yasushi,Sueishi Kenji,Yamakura Daiki,Ikumoto Hideyuki,Ohata Hitoshi,Inoue Takashi
The Bulletin of Tokyo Dental College 55(1), 39-47, 2014
… Cephalometric analysis revealed skeletal anterior crossbite due to anterior deviation of the mandible, with chin deviation of 10 mm to the right. …
NAID 130004471746

上下顎叢生,正中線不一致,顎偏位の一症例

桑木徹
日本矯正歯科協会学術雑誌 (11), 29-33, 2013
NAID 40019793190

Orthodontic Treatment in Combination with Le Fort II Bone Distraction in Patient with Apert Syndrome

Miyazaki Haruyo,Katada Hidenori,Ichinokawa Yoshimi,Hirabayashi Shinichi,Sueishi Kenji
The Bulletin of Tokyo Dental College 54(1), 9-17, 2013
… She had class III anterior crossbite, narrow upper and lower arches, and marked crowding. … Based on cephalometric analysis, anterior crossbite associated with marked midfacial hypoplasia was diagnosed. …
NAID 130004471731

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