2. Aberrant developmental position of teeth.
The presence of supernumerary teeth.
Hypodontia—the congenital absence of certain teeth.
The effects of certain habit activities.
Localized soft tissue anomalies—the labial frenum.
3. ABERRANT DEVELOPMENTAL POSITION OF
INDIVIDUAL TEETH
The teeth most commonly seen to be developing in an aberrant
position are the upper canines, the lower third molars, the upper
central incisors and the lower lateral incisors, all in the permanent
dentition.
Caused by trauma or unknown cause.
4. Dilaceration is a developmental disturbance in shape of teeth. It
refers to an angulation, or a sharp bend or curve, in the root or crown
of a formed tooth.
10. TREATMENT PLANNING FOR THE
MALPOSITIONED UNERUPTED UPPER CANINE
TOOTH
1 .Removal of the tooth.
2. Alignment into the dental arch with appliances.
3. Immediate repositioning of the tooth, either by extraction and
reimplantation or by immediate torsion.
4. No treatment
11. THE FOLLOWING FACTORS NEED TO BE
TAKEN INTO CONSIDERATION IN DECIDING
ON TREATMENT:
The general state of oral health and the patient's age and
desire to accept treatment.
The position of the unerupted tooth.
The space available in the dental arch.
The condition, position and appearance of neighboring
teeth, i.e. the lateral incisor, first premolar and primary
canine.
The occlusal relationship of the dental arches.
14. Effects and treatment option of supernumerary teeth
and their management
1) Failure of eruption
2) Displacement
3) Crowding
4) No effect
15. Anadontia is the total absence of teeth.
oligodontia is the congenital absence of many but not all teeth.
Hypodontia is the absence of only few teeth
C. HYPODONTIA
18. D. LOCALIZED SOFT TISSUE ANOMALIES—
THE LABIAL FRENUM.
a) Physiological (normal dental development)
which called ugly duckling stage.
b) Congenitally missing or peg shaped lateral
incisors.
c) Small teeth in large jaws (a spaced dentition).
d) Proclined upper incisors
e) Supernumerary teeth (conical type).
f) High frenum attachment
19. FUSION AND GEMINATION
fusion is seen when the tooth arises through the union of two normally
separated tooth germs
geminated teeth are anomalies, which arise from division of a single
germ by an invagination, leading to the formation of two incomplete teeth
and there is normal number of teeth.
