Abrasion ( Regressive Alterations of Teeth)
Reference books:-
Shafer’s Textbook:- https://amzn.to/3eNCqRx
Purkait textbook:- https://amzn.to/30AfTCq
What is Abrasion?
Causes of abrasion
Treatment of abrasion
Clinical features of Abrasion
Definition of Abrasion:- Abrasion is the pathological wearing of dental tissues or dental restorations by friction with foreign substances independent of occlusion.
Etiology and pathogenesis of Abrasion
#abrasion
#educational
#education
#oralpathology
#regressivealterationofteeth
Asian American Pacific Islander Month DDSD 2024.pptx
Abrasion ( Regressive Alterations of Teeth)
1. R E G R E S S I V E
ALTERATIONS OF
TEETH (PART 2)
A b r a s i o n
2. Abrasion is the pathological wearing of dental ti
ssue or dental restorations by friction with forei
gn substances independent of occlusion.
ABRASION:-
3.
4. Usually occurs on the exposed root
surfaces of teeth.
Robinson stated that the most
common cause of Abrasion of root
surface is the use of an abrasive
dentifrices.
5.
6.
7. #Causes of Abrasion :-
Toothbrush abrasion
Habitual Abrasion
Occupational Abrasion
Abrasion by prosthetic appliances
Ritual Abrasion
8. 1)TOOTHBRUSH ABRASION :-
- faulty toothbrush technique
Mostly occurs when the tooth brushing is done in horizontal
direction.
- If excessive force is applied on the teeth during brushing
-When abrasive dentifrices is used
9.
10. 2)HABITUAL ABRASION:-
-Excessive Habitual chewing of betel nut, tobacco and pan, etc. Causes
Abrasion of teeth.
Habitual pipe smokers may develop Abrasion on the incisal edge of upper n
lower anterior teeth due to continuous biting on the pipe stem.
--Chronic habitual bitting of pencils, Bobby pins (HAIR GRIPS) n threads,
etc. Often cause Abrasion.
- Improper n habitual use of tooth prick or dental floss, etc. Can cause
abrasions on the proximal surface of teeth.
11.
12.
13. 3) Occupational Abrasion:-
- Develops when object or instruments are habitually held
between the teeth by professionals during work
Like - hairpins
Carpenters often keep small tools or nails between their teeth
when they are at work n this type of practice cause abrasion of
teeth.
Similar type of Abrasion can also seen in tailors and smokers
14.
15. 4)Abrasion by prosthetic appliances :-
- Faulty clasp design in removable partial
denture (RPD) Prosthesis may also cause
abrasion of tooth.
16. 5) Ritual Abrasion :-
Ritual Abrasion are uncommon nowadays
and mainly confined in Africa.
17. #CLINICAL FEATURES OF ABRASIONS:-
- In Abrasion of tooth, the type and severity of
surface wear will depend upon the duration and
the type of faulty habit adopted by the person.
- Clinical manifestation differ in different types of
habit.
18.
19. - The Abrasion produces a 'V' shaped or wedge
shaped horizontal conical notch on the buccal
surface of teeth.
The notch will have sharp angles and highly
polished dentin surface.
- Toothbrush abrasions commonly occurs on the
cervical areas of labial or buccal surfaces of teeth.
20.
21. - Canine and premolar being the more prominent
teeth are often more severely affected by
abrasion.
- Teeth on the left side are more affected in the
right handed person (vice versa).
- Maxillary arch are more affected than the
Mandibular arch.
22. - In cervical Abrasion, lessions are more often wide
than deep.
- Tooth Abrasion also cause gingival recession.
- In pipe smokers, abrasions develop on the incisal
surface of upper and lower anterior teeth.
23. - Abrasion caused by habitual holding of nails or needles or other small
tools by the tailors or shoe makers or Carpenters etc.
Often produce a small, deep, well polished 'ditch' on incisal edge of
teeth
- Faulty use of tooth pick or dentalfloss cause loss of dentin and
cementum, specially of the root surfaces on the proximal walls of tooth.
- Severe Abrasion may cause opening of dentinal tubules and patient
may experience sensitivity in the affected teeth due to hot and cold
substances.
24.
25. - secondary or reactionary dentin usually
forms on the pulpul surface to protect the
teeth from pulp exposure.
- If left untreated,the lesion may deepen
further and it may eventually expose the
dental pulp with subsequent of pulpits and
other associated manifestations.
26. Treatment:-
- Avoidance of abnormal brushing habits
prevents abrasions, however in already
developed cases restorative treatment
helps to keep the tooth surface intact and
also it prevents further tooth wear.
