Etiology, clinical picture and treatment of pathology of hard tissues of teeth in orthopedic dentistry Indications and contraindications for inlay Features of the preparation of cavities for inlay Inlay manufacturing technique Inlay cementing Comparative characteristics of indirect composite and ceramic restorations

1. Etiology, clinical picture
and treatment of
pathology of hard tissues
of teeth with inlays.
Subject: prosthetic.
Presenter: Dr. Hamzah Abu Hashish

2. Contents of the lesson
 hard tissue pathology in dentistry definition.
 classification of hard pathology.
 etiology of the hard tissue pathology.
 clinical picture of the hard tissue pathology.
 Indications for inlay.
 contraindications for inlay.
 Features of the preparation of cavities for inlay.
 Inlay manufacturing technique.
 Inlay cementing.
 Compare the characteristics of indirect composite
and ceramic restorations.

3. Hard tissue pathology in dentistry
definition
 Diseases that lead to loss of hard dental tissues and the appearance of
defects in hard dental tissues include lesions of carious and non-
carious origin.
 Dental caries is a pathological process that manifests itself after
teething, which demineralization and softening of the hard tissues of
the teeth occur, followed by the formation of a defect in the form of
a cavity.

4. Wedge shape defect
Caries defect Fluorosis
Hypoplasia

5. Classification of hard pathology
curious Legion:
 According to black’s Classification :
• Class I.
• Class II.
• Class III.
• Class IV.
• Class V.
• Class VI.
 According to severity:
 Initial.
 Superficial.
 Medium.
 Deep.
Non-carious lesions
 According to the time of
appearance:
 Before eruption:
 Hyperplasia.
 Fluorosis.
 After eruption:
 Wedge shaped defect.
 Dental erosion.

6. Etiology of the hard tissue pathology
 For carious:
 bad oral hygiene.
 diabetes mellitus.
 Malocclusion.
 Poor treatment.
 For Non-carious:
 Trauma. (Hyperplasia)
 Medication intake during pregnancy. (Hyperplasia)
 Drinking water with high fluoride amount during the pregnancy. (Fluorosis)
 Orthodontic treatment. (Wedge shaped defect)
 Drinking acidic drinks like energy drinks. (Dental erosion)

7. Clinical picture
of the hard
tissue pathology

8. Hypoplasia
 Hypoplasia is an irreversible malformation of the hard tissues of teeth, characterized
by quantitative and qualitative disorders of the enamel due to changes in the enamel-
forming cells of the tooth buds - ameloblasts, changes in mineral metabolism, and
disruption of the crown of hard tissues.
 Hypoplasia etiology:
Environmental factors of enamel hypoplasia include certain illnesses (such as chicken pox
and measles), malnutrition, premature births or trauma and infection of a tooth.
Deficiencies in vitamins A, C and D and minerals such as phosphorus and calcium can
result in enamel hypoplasia.
 Classification:
 Systemic:
 Hutchinson's teeth.
 Fournier teeth.
 Pflueger's teeth.
 Local:
 Spotted
 Groovy
 Wavy
 Erosive
 Aplasia

9. Systemic hypoplasia
Hutchinson's teeth Fournier teeth
Pflueger's teeth
The crowns of the teeth have a
barrel shape with a semilunar
notch along the cutting edge.
The incisors of the upper jaw are
most often affected.
The crowns of the teeth have a
screwdriver or barrel shape
without a semilunar notch along
the cutting edge. The incisors of
both jaws are affected;
The first molars, which have a
cone-shaped shape with
underdeveloped cusps, are most
often affected.

10. Local hypoplasia
Spotted form Erosive form Groovy form Wavy form Aplasia form

13. Features of the preparation of cavities
for inlay

15. Inlay manufacturing technique

16. Inlay cementing

18. Compare the characteristics of
indirect composite and ceramic
restorations.

19. Thank you
for listening