Space management-Dr. V Flashcards
(35 cards)
1
Q
List complications of premature loss of primary teeth
A
- Supraeruption
- Mesial Drift
- Distal Drift
- Change in arch dimension (L & Circumference)
- Ectopic or blocked eruption of perm teeth
2
Q
What are some considerations to consider prior to placement of space maintainer
A
- OH
- Caries Risk
- teeth lost
- Teeth present or remaining
- Motivation
- Dental Hx
- Space Available
- Occlusion or malocclusion
- Timing & stage of development
- Bone Condition
- Potential & direction of space closure
3
Q
Loss of Primary Incisor
A
- cosmetic issue
- rarely space issue when permanent teeth erupt
- closes more w/early loss
4
Q
Loss of Primary 1st molar
A
- M/D drifting
- More pronounced in 3-5 y.o.
- Delayed & ectopic eruption of 2nd bicuspid
- Tx:
- early=Band & Loop
- Late= Lingual Arch
5
Q
Los of Primary 2nd Molar
A
- devastating
- difficult to tx
- Before 6 year molar erupts
- tx:
- distal shoe→once 6 yr molars are in, switch to:
- reverse band & loop
- lingual arch
- Transpalatal Arch (TPA)
- aka Nance appliance
- Nance Appliance
- Let teeth erupt, distalize, and create space
- distal shoe→once 6 yr molars are in, switch to:
- tx:
- After 6 yr. molars erupt
- Lingual arch
- lower arch if incisors have erupted
- hold leeway space (E space)
- hold multiple spaces unilateral or bilateral
- TPA/Nance
- Upper arch if incisors have not erupted
- passive
- hygienic
- not impinge on soft tissues
- Lingual arch
6
Q
Loss of Primary Canines
A
- Midline Shift
- Increase OJ & OB
- loss of arch dimensions
7
Q
Space Maintainer Appliances Protocol
A
- Must check at all recalls for:
- tooth movement, not passive
- loose or broken appliance
- decay
- gingival issue
- dental development
8
Q
What is the importance of space in primary dentition?
A
- Allows room for permanent dentition
- Decreases risk of decay
9
Q
What are the 4 D’s of ortho?
A
- Description
- Development
- Dimensions
- Diagnosis
10
Q
What are the stages of development in dentate individuals
A
- Primary
- Mixed
- early
- late
- Permanent
11
Q
How should development be evaluated?
A
- advanced or delayed based on norms
- age, race etc
12
Q
What terms are used to describe occlusion in mixed or permanent dentition?
A
- Angles Classification
- Overjet & Overbite
13
Q
Angles Classification:
A
- Normal:
- Maxillary 1st molar cusp→ Buccal groove of Lower 1st molar
- Class 1:
- normal molars
- other alignment irregularities
- crowding
- misalignment
- rotations
- crossbites
- Class 2:
- MB cusp anterior to buccal groove
- Class 3:
- MB cusp posterior to Buccal groove
14
Q
Overjet vs Overbite
A
- Overjet:
- horizontal misalignment
- upper front teeth protrude out
- aka Buck Teeth
- Overbite:
- Vertical Misalignment
- vertical distance b/w upper and lower front teeth
- aka deep bite or overbite
- Vertical Misalignment
15
Q
Terms to describe primary dentition
A
- Primate Spaces
- Baume Classification
- Terminal Plane
16
Q
Primate spaces
A
- naturally occurring
- primary teeth
- Upper arch
- lateral incisor & canine
- Lower arch
- 1st molar & canine
17
Q
Baume Classification
A
- primary teeth
- Type 1:
- 3-6 mm of space
- all space in all teeth
- Type 2
- crowded
- some rotated teeth due to limit space in anterior
18
Q
Leeway Space
A
- space b/w canine & 2nd molar
- maintains area for:
- permanent canine, 1st & 2nd premolar
- maintains area for:
- Maxilla
- needs 1.5mm on each side
- Mandibular:
- needs 2.5 on each side
19
Q
Terminal Plane
A
- primary teeth
- 2nd molar relationship
- Determines potential occlusion of permanent teeth
- Types:
- Straight Flush
- normal
- Distal Step
- Mesial Step
- Straight Flush
20
Q
What terms are used to describe arch dimensions?
A
- Arch length
- Central incisors→distal 1st perm molar
- arch width
- arch perimeter/circumference
21
Q
What are the trends in arch development:
A
- arch circumference differs
22
Q
Tanaka-Johnston space analysis
A
- based on lower incisor widths
- ½ with of lower incisors
- +11.0 mm=width of 1 quad of unerupted bicuspids & canine in maxillary
- +10.5mm=” “ in mandibular
23
Q
Moyers Space Analysis
A
Mixed Dentition
- Add widths of lower 4 incisors=width of unerupted bicuspids/canine from a table
- use 75%
24
Q
Pacifier Habit: Prevalence
A
- most children use
- prolonged use is rare
- thumb or finer habit might replace
25
Pacifier habit: associated malocclusion
* anterior open bite
* maxillary arch constriction w/posterior crossbite
* Labial movement of teeth
26
Pacifier habit impact on teeth
* Minimal if stopped by 18 months
* More pronounced 36+ months
27
Thumb and Finger Habits: Prevalence
* Most common
* Starts at birth
* ⅔ of it disappears by 5
* incidence:
* 30% @ 12 months
* 10% @ 5 y.o.
28
Thumb and Finger Habits: Associated Malocclusion
* Posterior cross bite
* Anterior Open bite
* Increased overjet
29
Thumb and Finger Habits: Impact on teeth
* Force magnitude
* Force direction
* Frequency in hrs/day
* Duration in years
30
Thumb and Finger habits: Treatment
* attempt before eruption of perm incisors
* emotional development
* counseling
* effective w/older children
* reminder therapy
* reward therapy
* adjunctive therapy
31
Tongue Thrust
* hard to define what is normal vs abnormal
* Passive vs active posture of tongue
32
What is an abnormal swallow
* aka atypical swallow
* active thrust during swallowing
33
Why is there anterior positioning of the tongue?
* development is anterior-posterior
* tonsils & adenoids
* need to seal off oral cavity
34
Lip habits : Types & describe
* Types:
* Lip Licking
* benign habit
* produces dermatitis
* Tx: palliative care
* Lip Biting:
* Body-focused repetitive behavior
* Tx: palliative care & cognitive behavior therapy
* Severe=radical action
* Lip sucking:
* aka trapped lip
* produces malocclusion
* tx:
* myofunctional therapy
* Lip appliance
* Functional appliance
* Fulll ortho care
* Periodontal tx: recession
35
Lip Habits: Impact on teeth
* Maxillary Incisors-Proclination
* Mandibular Incisors:
* retrclination
* contributes to increased:
* overjet
* Class 2 malocclusion
