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WorksheetsDental anomalies quiz
Total questions: 30
Worksheet time: 16mins
A conical extra tooth between 11 and 21 is called:
Odontoma
Mesiodens
Dens evaginatus
Gemination
Most common complication of mesiodens:
Root dilaceration
Delayed eruption of incisors
Taurodontism
Posterior crossbite
Fusion in primary teeth is associated with:
Macrodontia of successors
Delayed exfoliation
Hypodontia in permanent teeth
Supernumerary teeth
Tooth count in gemination is:
Reduced
Increased
Normal
Not useful
“Tooth within a tooth” appearance:
Dens evaginatus
Dens invaginatus
Talon cusp
Dilaceration
Common risk of dens invaginatus:
Attrition
Early pulp necrosis
Hypereruption
Infraocclusion
Enlarged pulp chamber + apical furcation:
Taurodontism
Amelogenesis imperfecta
Concrescence
Extra root
Taurodontism is most common in:
Maxillary canines
Mandibular molars
Maxillary incisors
Mandibular incisors
Hook-like projection from cingulum area is:
Talon cusp
Dens invaginatus
Fusion
Dilaceration
Anomaly most linked to delayed eruption:
Gemination
Mesiodens
Taurodontism
Talon cusp
Radiographic “tooth within a tooth”:
Fusion
Concrescence
Dens invaginatus
Dens evaginatus
Key feature of MIH:
Symmetrical lesions
Diffuse opacities
Demarcated opacities
Thin enamel
MIH enamel is usually:
Hard
Smooth
Porous
Thick
LA difficulty in MIH due to:
Thick enamel
Narrow foramina
Chronic pulpal inflammation
Short roots
Best restoration for severe MIH molar:
Composite
GIC
Amalgam
SSC (stainless steel crown)
Hypoplastic AI enamel is:
Soft
Thin but hard
Normal thickness
Easily worn away
Hypomaturation AI shows:
Thin enamel
Normal thickness but opaque
Pitted enamel
Smooth surfaces
AI may be associated with:
Coeliac disease
Diabetes
Nephrocalcinosis
Kawasaki disease
Best restoration for severe hypocalcified AI molar:
Composite
GIC
Veneer
SSC
Appearance of fluorosis:
Demarcated opacity
Diffuse white/brown opacities
Local hypoplasia
Post-eruptive breakdown
Fluorosis is distinguished from MIH by:
Sensitivity
Brown stains
Symmetrical lesions
Breakdown of enamel
Best treatment for mild fluorosis:
Crown
Veneer
Microabrasion
Extraction
Fluorosis risk increases most when fluoride >
0.5 ppm
0.7 ppm
1.0 ppm
2.0 ppm
Which statement correctly describes the difference between natal and neonatal teeth?
Natal teeth erupt within the first 30 days of life, while neonatal teeth are present at birth.
Natal teeth are present at birth, while neonatal teeth erupt within the first 30 days of life.
Both natal and neonatal teeth erupt after 6 months.
Neonatal teeth are always supernumerary, while natal teeth are always primary teeth.
Which of the following best describes a key difference between Amelogenesis Imperfecta (AI) and Molar-Incisor Hypomineralisation (MIH)?
AI affects only first permanent molars and incisors, while MIH affects all teeth.
MIH is genetic and affects all teeth, while AI is environmental and affects only molars.
AI affects all or most teeth due to a genetic defect, while MIH affects specific teeth due to developmental insult.
MIH always presents with thin enamel, while AI always presents with demarcated opacities.
Which finding is most characteristic of Dentinogenesis Imperfecta (DI)?
Well-demarcated white–cream opacities on molars with post-eruptive breakdown
Translucent grey-blue or amber teeth with rapid enamel chipping and dentine wear
Generalised thin enamel with normal dentine radiodensity
Patchy opacities on incisors with sensitivity but normal tooth morphology
Management of a Leong’s cusp (talon cusp) includes all of the following EXCEPT:
Gradual selective grinding over multiple visits to avoid pulp exposure
Applying desensitising agents or fluoride varnish after reduction
Sealing the developmental groove to prevent caries
Performing complete cusp reduction in a single visit if the tooth is asymptomatic
The diagnosis of MIH is based on all of the following features EXCEPT:
Presence of well-demarcated opacities on first permanent molars
Post-eruptive enamel breakdown on newly erupted FPMs
Hypersensitivity or difficulty with anaesthesia in affected molars
Generalised enamel thinning affecting most teeth in the dentition
Hypodontia is commonly associated with all of the following syndromes EXCEPT:
Ectodermal dysplasia
Down syndrome
Cleft lip and palate in Van der Woude syndrome
Marfan syndrome
Which of the following AI types is characterised by thin but hard enamel?
Hypocalcified AI
Hypomaturation AI
Hypoplastic AI
Hypomaturation–hypoplastic AI
