CDH Flashcards
When is root formation complete in the primary dentition?
12-18 months
What is the Leeway Space?
Difference between combined mesiodistal width of the PRIMARY canine and molar and the PERMANENT canine and PREmolar (Maxillary = 1.5mm) (Mandibular = 2.5mm)
In terms of timescale, when should we start worrying about delayed eruption of a tooth?
6 months after the eruption of its counterpart.
How many teeth are there in the primary dentition?
20
What permanent teeth do you expect to erupt between the age of 9-11 years old?
Lower 3s
When should the maxillary permanent canines be palpable buccally?
10 years old
What’s the dmft prevention fraction using fluoride varnish when used 2x/year?
33%
lower than in permanent teeth - 46%
Name 3 contraindications for Duraphat 22,600ppm
- severe asthma (previous hospital admission)
- stomatitis
- ulcerative gingivitis
Symptoms of fluoride overdose
- Nausea/vomiting/diarrhoea
- Excess salivation/tears/mucus
- Headache
- Generalised weakness
What is the lethal dose of Fluoride?
32-64 mg (BUT in some cases 16 mg is enough)
Fluoride supplements should not be issued if the water fluoridation exceeds…….ppm Fluoride
0.7
What is the dose dependant management of a Fluoride overdose of 5-15mg/kg?
- ED
- observation/milk
- gastric lavage
Fissure Sealants - which teeth?
- Primary Molars
- 1st + 2nd Perm Molars
- Pre-Molars
- Palatal pits or perm lateral incisors
Name the different types of Fissure sealants:
- Resin
- GIC
- Compomer
- Fluoride containing
Xylitol is more effective than Sorbitol. True or False?
True
Which pulphorn is largest in primary molars?
Mesio-buccal pulphorn
Harm due to Ionising radiation caused by x-rays in children younger than 10 years old, is …….x higher than in a 30 year old.
3
DPTs not recommended in children younger than ….
6 years of age
Children with low caries risk should have x-rays taken every….
12-18 months
Every 2 years for perm dentition
Pit and Fissure lesions make up …….% of all new lesions in adolescents.
85
What size film should be used in children aged 10-11 (12)?
Size 2
What types of radiographs in children are most commonly used? Name 7!
- Bite-wings
- Peri-apical
- DPT
- USO
- Oblique lateral
- Vertical Parallax (DPT+USO)
- Horizontal Parallax (peri apical 13&23 + USO)
Name the two major Behavioural Management Techniques in managing fear in children.
1) Psychological
2) Pharmacological
Name possible behavioural management techniques for dealing with fear in children - from most acceptable to the least acceptable in terms of parental tolerance:
TDS Pos. reinforcement Sedation Voice control GA Physical restraint
A definitely positively behaving child is awarded what score on the Frankl Behavioural Rating Scale?
Bx4
What are the 4 types of Pulp status?
- Normal
- Reversible Pulpitis
- Irreversible Pulpitis
- Pulp Necrosis
How to assess the pulp status without histological evidence?
- Symptoms
- Clinical Findings
- Special Investigations
Symptoms of a Reversible Pulpitis?
- Provoked Pain
- short in duration
- disappears on removal of stimulus
- relieved with analgesia
- ‘sharp’ pain
Symptoms of a Irreversible Pulpitis?
- Spontaneous pain
- Constant
- Long in duration
- Not always relieved by analgesia
- ‘dull throbbing ache’
- sleep disturbance
Restore or Extract primary molars. What to take into consideration?
MH
SH
DH
Pulp status
What are the pulp therapy options for a VITAL pulp (primary dentition)?
- Pulp capping (direct/indirect)
- Pulpotomy (vital/desensitising)
What are the pulp therapy options for a non vital pulp (primary dentition)?
- Pulpectomy
- Extraction
You have accidentally entered the pulp chamber whilst drilling a primary molar. What do you do?
Direct Pulp capping: Ca(OH)2 placed directly onto the pulp for the formation of a dentine-bridge.
Direct pulp capping is used in primary carious molars. True or False?
False! Deep carious lesions in primary teeth are treated with ‘indirect pulp capping’ if pulp is still vital.
What is used to establish haemostasis in Pulpotomy?
Ferric Sulphate (apply for 15 sec.)
What is the prevalence of Molar-Incisor Hypomineralisation (MIH)?
3.6 - 25%
What are the possible differential diagnoses of MIH?
- Fluorosis
- Amelogenesis Imperfecta
- Turner tooth
- Idiopathic Hypomineralisation
What tooth formation stages go wrong in MIH?
- Secretory phase (Hypoplasia)
- Maturation phase(Hypomineralisation)
What common childhood illnesses can cause MIH?
- Respiratory diseases
- Otitis Media
- coeliac disease
- cystic fibrosis
- renal disease
What are the treatment options for Incisor MIH?
- Etch - Bleach - Seal
- Bleach
- Composite
- Bleach + Composite
- Microabrasion
What are the 4 categories of child abuse?
1) Neglect
2) Emotional
3) Physical
4) Sexual
What is the ideal time to extract a compromised first permanent molar?
- root bi-furcation of 7s forming
- usually 8-10 years old (9 dental age)
In order to keep a FPM for as long as possible before XLA (i.e. For space maintenance), what would you use to restore it?
- GIC (RMGI)
- SSC
Who’s Christine’s future husband?
Calvin Harris
Who is Christine in love with?
Calvin Harris
What does Christine dream about at night?
Calvin Harris
What’s Christine’s screensaver on her phone?
Ishan (1/2 points for Calvin Harris)
What’s Christine’s darkest secret?
Savan
