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Talon cusp

MedGen UID:
140772
Concept ID:
C0399357
Anatomical Abnormality
Synonym: Talon cusps
SNOMED CT: Talon cusp (234955005)
 
HPO: HP:0011087

Definition

Talon cusp is an accessory cusp located near the cingulum (the portion of the lingual or palatal aspect of the tooth that forms a convex protuberance at the cervical third of the anatomic crown). [from HPO]

Term Hierarchy

Conditions with this feature

Temtamy preaxial brachydactyly syndrome
MedGen UID:
381425
Concept ID:
C1854466
Disease or Syndrome
Temtamy preaxial brachydactyly syndrome (TPBS) is an autosomal recessive disorder characterized by bilateral, symmetric preaxial brachydactyly and hyperphalangism of digits, facial dysmorphism, dental anomalies, sensorineural hearing loss, delayed motor and mental development, and growth retardation (summary by Li et al., 2010).
Rubinstein-Taybi syndrome due to EP300 haploinsufficiency
MedGen UID:
462291
Concept ID:
C3150941
Disease or Syndrome
Rubinstein-Taybi syndrome (RSTS) is characterized by distinctive facial features, broad and often angulated thumbs and halluces, short stature, and moderate-to-severe intellectual disability. The characteristic craniofacial features are downslanted palpebral fissures, low-hanging columella, high palate, grimacing smile, and talon cusps. Prenatal growth is often normal, then height, weight, and head circumference percentiles rapidly drop in the first few months of life. Short stature is typical in adulthood. Obesity may develop in childhood or adolescence. Average IQ ranges between 35 and 50; however, developmental outcome varies considerably. Some individuals with EP300-RSTS have normal intellect. Additional features include ocular abnormalities, hearing loss, respiratory difficulties, congenital heart defects, renal abnormalities, cryptorchidism, feeding problems, recurrent infections, and severe constipation.
Rubinstein-Taybi syndrome due to CREBBP mutations
MedGen UID:
1639327
Concept ID:
C4551859
Disease or Syndrome
Rubinstein-Taybi syndrome (RSTS) is characterized by distinctive facial features, broad and often angulated thumbs and halluces, short stature, and moderate-to-severe intellectual disability. The characteristic craniofacial features are downslanted palpebral fissures, low-hanging columella, high palate, grimacing smile, and talon cusps. Prenatal growth is often normal, then height, weight, and head circumference percentiles rapidly drop in the first few months of life. Short stature is typical in adulthood. Obesity may develop in childhood or adolescence. Average IQ ranges between 35 and 50; however, developmental outcome varies considerably. Some individuals with EP300-RSTS have normal intellect. Additional features include ocular abnormalities, hearing loss, respiratory difficulties, congenital heart defects, renal abnormalities, cryptorchidism, feeding problems, recurrent infections, and severe constipation.

Professional guidelines

PubMed

Hattab FN, Yassin OM, al-Nimri KS
Quintessence Int 1995 Feb;26(2):115-20. PMID: 7568721

Recent clinical studies

Etiology

Decaup PH, Garot E, Rouas P
Arch Oral Biol 2021 May;125:105112. Epub 2021 Mar 23 doi: 10.1016/j.archoralbio.2021.105112. PMID: 33780721
Cavalcante BGN, Lacerda RHW, Assis IO, Bezamat M, Modesto A, Vieira AR
Cleft Palate Craniofac J 2021 May;58(5):597-602. Epub 2020 Sep 16 doi: 10.1177/1055665620958569. PMID: 32935555
Leith R, O'Connell AC
J Clin Pediatr Dent 2018;42(1):1-5. Epub 2017 Sep 22 doi: 10.17796/1053-4628-42.1.1. PMID: 28937898
Özkan G, Toptaş A, Güneri P
Surg Radiol Anat 2016 Nov;38(9):1105-1110. Epub 2016 Feb 22 doi: 10.1007/s00276-016-1653-6. PMID: 26899859
McNamara T, Haeussler AM, Keane J
Int J Paediatr Dent 1997 Dec;7(4):259-62. doi: 10.1046/j.1365-263x.1997.00052.x. PMID: 9482033

Diagnosis

Cordeiro WJ, do Couto CF, Barros RN, Zarranz L, Jorge MZ, de Gouvêa CV
J Dent Child (Chic) 2014 Sep-Dec;81(3):161-70. PMID: 25514262
Colak H, Yilmaz C, Keklik H, Colak T
Gen Dent 2014 May-Jun;62(3):e14-8. PMID: 24784523
Yazıcıoğlu O, Ulukapı H
J Esthet Restor Dent 2014 Nov-Dec;26(6):374-81. Epub 2014 Apr 23 doi: 10.1111/jerd.12101. PMID: 24754347
Lee CK, King NM, Lo EC, Cho SY
J Clin Pediatr Dent 2006 Summer;30(4):299-305. doi: 10.17796/jcpd.30.4.1v1rk3053n018h84. PMID: 16937855
McNamara T, Haeussler AM, Keane J
Int J Paediatr Dent 1997 Dec;7(4):259-62. doi: 10.1046/j.1365-263x.1997.00052.x. PMID: 9482033

Therapy

Decaup PH, Garot E, Rouas P
Arch Oral Biol 2021 May;125:105112. Epub 2021 Mar 23 doi: 10.1016/j.archoralbio.2021.105112. PMID: 33780721
Shetty P, Xavier AM
Int Endod J 2011 Nov;44(11):1061-8. Epub 2011 Jul 1 doi: 10.1111/j.1365-2591.2011.01906.x. PMID: 21718335
Hamasha AA, Safadi RA
BMC Oral Health 2010 Apr 20;10:6. doi: 10.1186/1472-6831-10-6. PMID: 20406435Free PMC Article
Ferraz JA, de Carvalho Júnior JR, Saquy PC, Pécora JD, Sousa-Neto MD
Braz Dent J 2001;12(2):132-4. PMID: 11445915
Rusmah, Meon
Aust Dent J 1991 Feb;36(1):11-4. doi: 10.1111/j.1834-7819.1991.tb00801.x. PMID: 2029226

Prognosis

Santos CN, Cardoso MCAC, Turrioni AP, Santo ASM, Paranhos LR
Spec Care Dentist 2019 Nov;39(6):624-630. Epub 2019 Oct 29 doi: 10.1111/scd.12425. PMID: 31661162
Esmaeilzadeh M, Donyavi Z, Shokri A
J Craniofac Surg 2016 Mar;27(2):e170-2. doi: 10.1097/SCS.0000000000002412. PMID: 26854775
Hariharan VS, Murali RV, Rayen R, Kularashmi BS, Jeevarathan J
Eur J Paediatr Dent 2013 Mar;14(1):77-81. PMID: 23597227
Yoon RK, Chussid S
Pediatr Dent 2007 Jan-Feb;29(1):51-5. PMID: 18041513
Rusmah, Meon
Aust Dent J 1991 Feb;36(1):11-4. doi: 10.1111/j.1834-7819.1991.tb00801.x. PMID: 2029226

Clinical prediction guides

Decaup PH, Garot E, Rouas P
Arch Oral Biol 2021 May;125:105112. Epub 2021 Mar 23 doi: 10.1016/j.archoralbio.2021.105112. PMID: 33780721
Cavalcante BGN, Lacerda RHW, Assis IO, Bezamat M, Modesto A, Vieira AR
Cleft Palate Craniofac J 2021 May;58(5):597-602. Epub 2020 Sep 16 doi: 10.1177/1055665620958569. PMID: 32935555
Chen JW, Huang GT, Bakland LK
J Am Dent Assoc 2020 May;151(5):358-367. Epub 2020 Mar 21 doi: 10.1016/j.adaj.2020.01.015. PMID: 32209245
Sachdeva SK, Verma P, Dutta S, Verma KG
Indian J Dent Res 2014 May-Jun;25(3):398-400. doi: 10.4103/0970-9290.138355. PMID: 25099002
Yazıcıoğlu O, Ulukapı H
J Esthet Restor Dent 2014 Nov-Dec;26(6):374-81. Epub 2014 Apr 23 doi: 10.1111/jerd.12101. PMID: 24754347

Recent systematic reviews

Decaup PH, Garot E, Rouas P
Arch Oral Biol 2021 May;125:105112. Epub 2021 Mar 23 doi: 10.1016/j.archoralbio.2021.105112. PMID: 33780721
Smail-Faugeron V, Picou Rollin J, Muller Bolla M, Courson F
BMJ Case Rep 2016 Oct 5;2016 doi: 10.1136/bcr-2016-216672. PMID: 27707761Free PMC Article

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