Toothwear 1 Flashcards

1
Q

Types of toothwear?

A

Physiological - normal wear associated with age

Pathological - wear exceeds what
would be seen as normal for the age.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Define attrition

A

Physiological wearing away of tooth structure, due to tooth to tooth contact.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Where may attrition be found? What are typical presentations?

A

Occlusal and incisal contacting surfaces

Reduction in cusp heigh and flattening of inclined planes

Shortening of crown length.

Almost always related to parafunctional habit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is abrasion?

A

Physical wear through abnormal mechanical processes, irrespective of occlusion. Involves foreign object or substance repeatedly contacting tooth.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Common presentations for abrasion?

A

Site / pattern related to abrasive element

Often buccal or incisal or cervical on canine or premolars

Most common cause is aggressive tooth brushing

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Define erosion

A

Loss of tooth surface due to chemical process that does not involve bacterial action

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Typical presentations of erosion?

A

Chronic exposure to acidic substances

Early stages, enamel is affected and loss of surface detail

Eventually surfaces become concave, smooth and eroded

Typically bilateral, concave lesions

Increased translucency of incisal edges

No staining

Restorations sit proud of teeth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is abfraction?

A

Loss of hard tissue from eccentric occlusal forces, leading to compressive and tensile stresses at the cervical fulcrum areas of tooth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What occurs during abfraction? Typical presentation?

A

Tooth loss at cervical margin

Loading forces on occlusal surface cause flexural stress and failure of enamel and dentine at a location away from the loading

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What are the main things an assessment of toothwear needs to do?

A

Recognise problem

Grade it’s severity

Diagnose likely cause or causes

Monitor progression
- active or historic
- preventative measures working?

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What MH may mean erosion is involved?

A

Bulimia

Alcoholism

Eating disorders

Low pH medication

Heartburn and GORD

Pregnancy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What things about a patients history should we know for toothwear

A

Chief complaint

Medical history and meds

Regular attender who will comply with treatment?
- OH habits
- brushing regime

Social
- smoking, drinking
- bruxism
- habits such as fingernail biting
- sports

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What should be checked in an EO exam for toothwear?

A

TMJ for restriction of movement

Musculature, for hypertrophy

Mouth opening, for restriction or deviation on movement

Overclosure

Lip line and smile line

FWS, OVD and RFH

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What IO examinations should be checked for tooth wear?

A

Occlusion

Overbite and overjet

Assess contacts, are they stable

Assess tooth movements when jaw moves

Soft tissues, keratosis from parafunction?

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

When examining tooth wear specifically, what should be recorded?

A

Location of wear
- anterior / posterior
- localised / generalised

Severity
- enamel only
- into dentine
- severe

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is the BEWE?

A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

immediate treatment for toothwear?

A

Deal with pain

Sensitivity - de sensitising agents

Pulp extirpation if pulp health compromised

Smooth sharp edges - if causing trauma

Extraction - pain in unrestoreable teeth

TMJ pain - needs to be controlled, especially in attrition

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Initial treatment, after immediate, for toothwear

A

Stabilise dentition

Deal with caries

Deal with perio

Deal with Oro-mucosal

Wear is important but whole mouth essential

Then finally develop a preventative programme of treatment, as no point treating an ongoing problem

19
Q

What preventative treatment might be done?

A

Monitoring of wear

Baseline wear recording required
- bewe
- photographs

  • will identify if it is historic or active
20
Q

How might one prevent abrasion?

A

Remove ‘foreign object’

Change toothpaste

Alter brushing habits

Change habits such as nail biting, wire stripping, pen chewing etc

Place RMGIC or GIC in cervical abrasion due to tooth brushing etc

21
Q

Why is RMGIC first line cervical restoration material?

A

Best survival rate

Fluoride release

Composite had higher modulus compromising retention

Balance aesthetics with retention of restoration

22
Q

How is attrition prevented?

A

Parafunction is usually the cause

often a centrally mediated response to life stressors
- CBT
- hypnosis

Can help prevent parafunction

Splints can be used, wear is done to these rather than teeth
- soft splint is a good diagnostic device as it shows where wear facets mainly are. Hard splint is more robust.

23
Q

How might erosion be prevented?

A

Target source of the acid

Use fluorides, such as tooth mousse GC, dural hat varnish, fluoride mouthwash, high fluoride toothpaste etc.

Use desensitising agents for symptomatic relief

Manage diet if consuming high volumes of sugar / high frequency
- use a straw for drinks etc

Medical control of gastric acid - possible consult doctor
- Rennie or omeprazole

24
Q

How might abfraction be prevented?

A

Low modulus restorations in cervical cavities

Assess occlusion, any heavy occlusal contacts

25
Classifications of maxillary anterior toothwear?
Limited to palatal surfaces only Palatal and incisal edges, with reduced crown height Limited to labial surfaces
26
How actively treat maxillary anterior toothwear limited to palatal surfaces?
Tooth coloured restoration material placed palatally
27
Why might OVD be unchanged but teeth be worn?
Rapid toothwear with no time for alveolar compensation Easiest to treat as no change in OVD
28
How might space be created for restoration of tooth wear?
DAHL TECHNIQUE - removable COCR or composite anterior bite plane Allows occlusion on raised Cingulum, and disclusion of posterior teeth, leading to increase in OVD 3-6 months, variable length but faster in younger patients. If no movement in 6 months it wont work.
29
When wont DAHL technique work?
Active periodontal disease TMJ issues Post ortho Bisphosphonate medication Dental implants Existing conventional bridges
30
What clinical feature gives confidence worn anterior teeth can be restored?
Remaining enamel ‘ring of confidence’
31
What should not be done when treating lower anteriors for tooth wear? What should be done if building them up?
No not increase OVD in lowers If have to build up, do them first before uppers
32
How can localised posterior tooth wear be treated restoratively?
Composite resin to the palatal of the maxillary canines Puts posterior teeth in disclusion during lateral movements a Posterior saved from further damage and can be restored
33
What information would i give to a patient before completing diagnostic wax ups?
Your front teeth will receive tooth coloured fillings to cover the exposed and worn tooth surface This will prevent them from wearing more, this is the reason it needs treating Procedure carried out without local anaesthetic, minimal to no drilling to teeth We add to teeth, not remove Improved aesthetics Your bite may feel strange at first as only front teeth with contact, may have trouble chewing This will change as your back teeth gradually come back together in 3-6 months May lisp at first and may bite lips and tongue initially but this will all resolve If you have crowns or bridges or RPDs at the back, they will likely need replacing
34
What information can i give regarding longevity of tooth wear restorations?
Should be good, small potential for deboning though But these can be replaced easily with no damage to tooth Will require maintenance with some polishing, occasional chipping may occur
35
What 3 categories of generalised wear are there?
Excessive wear with loss of OVD Excessive wear without loss of OVD but available space Excessive wear without loss of OVD and with no space
36
What is crown lengthening surgery? Pros cons?
Crown lengthening by lowering gingiva and adjusting crowns Can improve aesthetics and make space in OVD Often post op sensitivity Black triangles due to papilla change Greater chance of pulpal damage
37
How must i cover myself when treating a patient with toothwear?
NOTES - wear recognised - patient informed of wear - monitoring - advice given - patient compliant / non complaint our unwilling to follow course of action - surface treatments e.g. topical fluoride noted at each occasion - consent gained for treatment - pt must understand their role in this - all discussions recorded properly - record rationale behind preventative treatment or temporary treatment, and pt must understand this - minimally invasive treatments done first - second opinion from specialist in tough cases - referral documentation kept
38
How treat toothwear with space present?
Direct or indirect composite Porcelain veneers Onlays Adhesive dentistry
39
How treat localised maxillary anterior tooth wear with little / no space?
Gain space with DAHL appliance Restore with composites, veneers, crowns etc Over-dentures
40
How treat localised mandibular anterior toothwear with little to no space?
Monitor of only lower anteriors If both, gain space with DAHL then restore lowers before uppers
41
How treat localised posterior tooth wear with little to no space available?
Accept and monitor Provide canine rise if posterior disclusion absent on lateral / Protrusive movement
42
How treat generalised toothwear with increased FWS
Overclosed because wear uncompensated Work to existing RFH
43
How treat generalised toothwear with normal FWS?
Compensation occured Increase OVD and check tolerance to new OVD If tolerated then treatment plan for full mouth, if not Consider crown lengthening
44