1. DISORDERS OF DEVELOPMENT OF TEETH Dr. Shahzadi Tayyaba Hashmi

2. Abnormalities in Size of Teeth
A. Microdontia (small teeth):
One or more teeth that are smaller than normal
When all the teeth in both arches are smaller than normal, the condition is termed as generalized microdontia
Examples:
Maxillary lateral incisors (peg laterals)
Maxillary third molars

3. Abnormalities in Size of Teeth
B. Macrodontia (Large teeth):
One or more teeth that are larger than normal
When all the teeth in both arches are larger than normal, the condition is termed as generalized macrodontia
Examples:
Mandibular cuspids (canines)

4. Abnormalities in Shape
Dilaceration :
a sharp bend or angulation involving the root of a tooth
Can be seen radiographicaly
Causes:
Trauma during tooth development
Continued rood formation during a curved path of eruption

5. Abnormalities in Shape
Taurodontism:
Taurodontism means bull-like teeth
A developmental disorder that primarily affects molars
Both permanent and deciduous teeth may be affected
Teeth exhibits rectangular shape and apically displaced furcation results in large pulp chamber and short pulp canals

6. taurodontism

7. Abnormalities in Shape
Dens invaginatus:
Commonly known as dens in dente (a tooth within tooth)
Primarily affects permanent maxillary lateral incisors
Teeth with deep invaginations develop Pulpitis, pulpal necrosis and inflammatory peri apical disease

8. Abnormalities in Shape
Gemination:
A developmental dental anomaly characterized by a single rooted tooth with wide, partly divided crown or two separate crowns
Caused by incompletely divided tooth germ
Gemination can affect permanent and deciduous dentitions

9. Abnormalities in Shape
Fusion:
A developmental dental anomaly characterized by abnormally shaped tooth that exhibits a wide crown or a normal crown with an additional root
Fusion results when two adjacent tooth germs merge producing one tooth
Incisors are commonly affected

10. Fusion ( commonly seen in incisors)
Gemination

11. Abnormalities in Shape
Concrescence:
In concrescence, roots of the adjacent teeth are joined by cementum
Primarily affects permanent maxillary molars

12. Abnormalities in Shape
Enamel pearls :
An enamel pearl is a condition of teeth where enamel is found on locations where enamel is not supposed to be, such as on a root surface
They are found usually in the area between roots, which is called a furcation, of molars.
Enamel pearls are not common in teeth with a single root

13. ESSENTIAL REFERENCES
Oral Pathology for the Dental Hygienist (5th Edition) By Olga A. C. Ibsen, RDH, MS and Joan
Contemporary for oral and maxillofacial pathology by J.Phillip Sapp, Lewis Roy Eversole

14. THANK YOU