Characterization of the inherited dental anomalies
Questionnaire for congenital dental anomalies
The Canine Genetics Research Group led by prof. Hannes Lohi in the University of Helsinki and
Folkhälsan Institute of Genetics has started a project concerning the genetic background of
dental anomalies (e.g oligodontia) in dogs. The development of dog and human teeth show
remarkable similarities and possible new results of this study will likely be applicable also to
research on human dental anomalies.
To develop a successful genetic study we have generated this questionnaire to find out more
details about congenitally lacking teeth in dogs (teeth that never erupted. The researchers
responsible are prof. Hannes Lohi ([email protected] or tel. +358 9 19125085), dos.
Pekka Nieminen ([email protected] or tel. +358 9 19125215) ja M.Sc. Marjo Hytönen
([email protected] or tel. +358 9 19125149).
If your dog has missing teeth, please, mark them down to the form below. This study is focused
on congenital teeth defects, so do not mark teeth which developed but have fallen or extracted.
By this we mean the teeth which have never erupted. Do not mark the teeth which have been
there once but then fallen away or extracted. If you don’t remember the amount of the
deciduous (milk) teeth, leave that area empty. There is a schematic picture of dog teeth on the
second page which may help you to determine the identities of the missing teeth.
If possible, send us photos of the teeth of your dog.
Name of the owner:
Tel. number and email:
Official name of the Dog:
Registration number:
Breed:
Mark to the tooth map below the teeth that are congenitally missing from your dog (you can use
the schematic picture on the next page as a help).
UPPER JAW
permanent teeth
M2 M1 P4 P3 P2 P1
right
C I3 I2 I1
I1 I2 I3 C
dC dI3 dI2 dI1
dI1 dI2 dI3 dC
P1 P2 P3 P4 M1 M2
left
deciduous (milk) teeth
dP4dP3dP2
dP2dP3dP4
right
left
LOWER JAW
deciduous (milk) teeth
dP4dP3dP2
dC dI3 dI2 dI1
dI1 dI2 dI3 dC
right
permanent teeth
M3 M2 M1 P4 P3 P2 P1
right
dP2dP3dP4
left
C I3 I2 I1
I1 I2 I3 C
P1 P2 P3 P4 M1 M2 M3
left
Has there been any permanent teeth falling away or has any teeth been removed? If yes, how
many?
Return the questionnaire by email to the address: [email protected]
or by mail to the address:
Canine Genetics Research Group
Biomedicum Helsinki
Haartmaninkatu 8, P.O. Box 63
00014 University of Helsinki
Further questions about this tooth defect research can be addressed to prof. Hannes Lohi
([email protected] or tel. +358 2941 25085) and M.Sc. Marjo Hytönen
([email protected] or tel. +358 2941 25149)
Canine teeth
I = incisor
C = canine
P = premolar
M = molar
d = deciduous tooth (milk tooth)