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Obtuse angle of mandible

MedGen UID:
871603
Concept ID:
C4038738
Finding
Synonym: Obtuse angle to mandible
SNOMED CT: Steep mandibular plane angle (709997007)
 
HPO: HP:0005446

Definition

Abnormally flat (obtuse) angle of the mandible. The angle of the mandibular, located at the junction between the body and the ramus of the mandible, is normally close to being a right angle. This terms describes an abnormal increase of this angle such that the mandible appears flatter than normal. [from HPO]

Term Hierarchy

CClinical test,  RResearch test,  OOMIM,  GGeneReviews,  VClinVar  
  • Obtuse angle of mandible

Conditions with this feature

Melnick-Needles syndrome
MedGen UID:
6292
Concept ID:
C0025237
Disease or Syndrome
The X-linked otopalatodigital (X-OPD) spectrum disorders, characterized primarily by skeletal dysplasia, include the following: Otopalatodigital syndrome type 1 (OPD1). Otopalatodigital syndrome type 2 (OPD2). Frontometaphyseal dysplasia type 1 (FMD1). Melnick-Needles syndrome (MNS). Terminal osseous dysplasia with pigmentary skin defects (TODPD). In OPD1, most manifestations are present at birth; females can present with severity similar to affected males, although some have only mild manifestations. In OPD2, females are less severely affected than related affected males. Most males with OPD2 die during the first year of life, usually from thoracic hypoplasia resulting in pulmonary insufficiency. Males who live beyond the first year of life are usually developmentally delayed and require respiratory support and assistance with feeding. In FMD1, females are less severely affected than related affected males. Males do not experience a progressive skeletal dysplasia but may have joint contractures and hand and foot malformations. Progressive scoliosis is observed in both affected males and females. In MNS, wide phenotypic variability is observed; some individuals are diagnosed in adulthood, while others require respiratory support and have reduced longevity. MNS in males results in perinatal lethality in all recorded cases. TODPD, seen only in females, is characterized by a skeletal dysplasia that is most prominent in the digits, pigmentary defects of the skin, and recurrent digital fibromata.

Professional guidelines

PubMed

Davidopoulou S, Chatzigianni A
Prog Orthod 2017 Dec;18(1):10. Epub 2017 Apr 27 doi: 10.1186/s40510-017-0164-2. PMID: 28447324Free PMC Article
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Tucker MR
J Oral Maxillofac Surg 1995 May;53(5):572-8. doi: 10.1016/0278-2391(95)90071-3. PMID: 7722727

Recent clinical studies

Etiology

Luo GJ, Chou PY, Chen CH
Ann Plast Surg 2024 Jan 1;92(1S Suppl 1):S21-S26. Epub 2023 Dec 20 doi: 10.1097/SAP.0000000000003761. PMID: 38285991
Volk AS, Davis MJ, Narawane AM, Abu-Ghname A, Dempsey RF, Lambert EM, Tran BH, Wirthlin JO, Buchanan EP
Cleft Palate Craniofac J 2020 Aug;57(8):1032-1040. Epub 2020 Apr 7 doi: 10.1177/1055665620913780. PMID: 32253927
Zellner EG, Reid RR, Steinbacher DM
J Craniofac Surg 2017 Nov;28(8):1946-1949. doi: 10.1097/SCS.0000000000003974. PMID: 28938321
Akarsu-Guven B, Karakaya J, Ozgur F, Aksu M
Am J Orthod Dentofacial Orthop 2015 Oct;148(4):576-86. doi: 10.1016/j.ajodo.2015.02.031. PMID: 26432313
Ozturk CN, Ozturk C, Bozkurt M, Uygur HS, Papay FA, Zins JE
Aesthet Surg J 2013 Sep 1;33(7):967-74. Epub 2013 Sep 10 doi: 10.1177/1090820X13503473. PMID: 24023258

Diagnosis

Zellner EG, Reid RR, Steinbacher DM
J Craniofac Surg 2017 Nov;28(8):1946-1949. doi: 10.1097/SCS.0000000000003974. PMID: 28938321
Laffranchi L, Dalessandri D, Tonni I, Paganelli C
Minerva Stomatol 2010 Nov-Dec;59(11-12):653-61. PMID: 21217630
Rogers GF, Lim AA, Mulliken JB, Padwa BL
J Oral Maxillofac Surg 2009 Nov;67(11):2323-31. doi: 10.1016/j.joms.2009.06.010. PMID: 19837298
Alves Pereira D, Berini Aytés L, Gay Escoda C
Med Oral Patol Oral Cir Bucal 2008 Oct 1;13(10):E633-5. PMID: 18830170
Christian CL, Lachman RS, Aylsworth AS, Fujimoto A, Gorlin RJ, Lipson MH, Graham JM Jr
Am J Med Genet 1991 Dec 15;41(4):508-14. doi: 10.1002/ajmg.1320410426. PMID: 1776646

Therapy

Davidopoulou S, Chatzigianni A
Prog Orthod 2017 Dec;18(1):10. Epub 2017 Apr 27 doi: 10.1186/s40510-017-0164-2. PMID: 28447324Free PMC Article
Yashwant V A, K R, Arumugam E
Dental Press J Orthod 2016 Jul-Aug;21(4):50-9. doi: 10.1590/2177-6709.21.4.050-059.oar. PMID: 27653264Free PMC Article
Upadhyay M, Yadav S, Nagaraj K, Uribe F, Nanda R
Angle Orthod 2012 Mar;82(2):294-303. Epub 2011 Aug 26 doi: 10.2319/042811-302.1. PMID: 21867432Free PMC Article

Prognosis

Gao Z, Chen Y, Li F, Li H, Liu J, Wu W, Hao J, Wang H
J Oral Maxillofac Surg 2020 May;78(5):822.e1-822.e16. Epub 2020 Jan 7 doi: 10.1016/j.joms.2019.12.023. PMID: 32032530
Posnick JC, Egolum N, Tremont TJ
J Oral Maxillofac Surg 2018 Oct;76(10):2209.e1-2209.e15. Epub 2018 Jun 12 doi: 10.1016/j.joms.2018.06.009. PMID: 30269767
Esenlik E, Plana NM, Grayson BH, Flores RL
Plast Reconstr Surg 2017 Dec;140(6):1240-1249. doi: 10.1097/PRS.0000000000003853. PMID: 28820843
Akarsu-Guven B, Karakaya J, Ozgur F, Aksu M
Am J Orthod Dentofacial Orthop 2015 Oct;148(4):576-86. doi: 10.1016/j.ajodo.2015.02.031. PMID: 26432313
Laffranchi L, Dalessandri D, Tonni I, Paganelli C
Minerva Stomatol 2010 Nov-Dec;59(11-12):653-61. PMID: 21217630

Clinical prediction guides

Gao Z, Chen Y, Li F, Li H, Liu J, Wu W, Hao J, Wang H
J Oral Maxillofac Surg 2020 May;78(5):822.e1-822.e16. Epub 2020 Jan 7 doi: 10.1016/j.joms.2019.12.023. PMID: 32032530
Esenlik E, Plana NM, Grayson BH, Flores RL
Plast Reconstr Surg 2017 Dec;140(6):1240-1249. doi: 10.1097/PRS.0000000000003853. PMID: 28820843
Zheng ZW, Fang YM, Lin CX
J Oral Maxillofac Surg 2016 Aug;74(8):1649-57. Epub 2016 Mar 24 doi: 10.1016/j.joms.2016.03.019. PMID: 27091781
Akarsu-Guven B, Karakaya J, Ozgur F, Aksu M
Am J Orthod Dentofacial Orthop 2015 Oct;148(4):576-86. doi: 10.1016/j.ajodo.2015.02.031. PMID: 26432313
Alves Pereira D, Berini Aytés L, Gay Escoda C
Med Oral Patol Oral Cir Bucal 2008 Oct 1;13(10):E633-5. PMID: 18830170

Recent systematic reviews

Almeida KCM, Raveli TB, Vieira CIV, Santos-Pinto AD, Raveli DB
Dental Press J Orthod 2017 Sep-Oct;22(5):56-66. doi: 10.1590/2177-6709.22.5.056-066.oar. PMID: 29160345Free PMC Article

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