Shedding of Deciduous Teeth

Shedding of deciduous (primary) teeth, also known as physiological exfoliation, is a normal developmental process occurring approximately between 5 and 12 years of age, during which primary teeth are naturally replaced by permanent teeth.

This process allows adaptation of dentition to jaw growth, increased masticatory forces, and functional maturation. Primary teeth should normally be allowed to fall out naturally unless there is disease, pain, infection, or eruption disturbance requiring dental intervention.

Premature loss of primary teeth may result in:

• Loss of arch space

• Malocclusion

• Crowding of permanent teeth

• Eruption abnormalities

Parents and caregivers must therefore receive proper counseling regarding normal tooth mobility and timing of dental consultation.

Pathophysiology

Shedding occurs through a biologically regulated root resorption process.

Mechanism of Exfoliation

• Developing permanent teeth grow beneath primary teeth.

• Pressure from erupting permanent tooth germs stimulates specialized cells called odontoclasts and osteoclasts.

• These cells progressively resorb:

  • Root dentin

  • Cementum

  • Periodontal ligament

  • Supporting alveolar bone

Root resorption begins at the area closest to the permanent successor tooth and continues until the primary tooth loses attachment and becomes mobile before exfoliation.

Pattern of Root Resorption

Anterior teeth

• Permanent teeth develop lingual to primary teeth.

• Resorption begins on lingual root surfaces.

Primary molars

• Permanent premolars develop between divergent roots.

• Resorption begins in the furcation area.

Eventually, chewing forces and tongue movement assist final tooth loss.

Factors Influencing Shedding

• Genetics (major determinant)

• Nutrition (Calcium, Vitamin D)

• Endocrine function

• Systemic diseases

• Trauma

• Infection

• Presence or absence of permanent successor

Endocrine disorders or malnutrition may delay exfoliation.

Signs and Symptoms

Normal findings include:

• Progressive tooth mobility

• Mild gum discomfort

• Small gingival bleeding during tooth loss

• Appearance of erupting permanent tooth

• Temporary spacing between teeth

• Mixed dentition stage (both primary and permanent teeth present)

Warning Signs (Abnormal)

• Painful swelling

• Persistent retained primary tooth

• Permanent tooth erupting in wrong position (“double row teeth”)

• Infection or abscess

• Early tooth loss (<4–5 years)

• Delayed shedding (>13 years)

Diagnostic Criteria

Diagnosis is mainly clinical.

Normal Physiological Shedding

• Age appropriate (5–12 years)

• Mobile tooth with reduced root length

• Presence of erupting permanent successor

• No infection or severe pain

Abnormal Shedding

• Early exfoliation due to caries or trauma

• Delayed exfoliation

• Ankylosed primary tooth

• Absence of permanent successor

• Ectopic eruption

Investigation

Clinical Examination

• Tooth mobility grading

• Gingival health assessment

• Eruption pattern evaluation

• Occlusion assessment

• Space availability in dental arch

Radiological Investigation

Periapical X-ray

• Root resorption status

• Permanent tooth position

OPG (Orthopantomogram)

• Multiple eruption disturbances

• Missing tooth germ

• Impacted permanent teeth

Radiographs confirm relationship between primary and permanent dentition.

Treatment

Management is mainly conservative.

Non-Pharmacological Management

• Reassure parents that shedding is physiological

• Encourage gentle loosening of mobile teeth

• Maintain oral hygiene

• Monitor eruption sequence

• Extraction only when indicated

Indications for Extraction

• Pain or infection

• Severely carious tooth

• Interference with eruption

• Orthodontic indication

• Aspiration risk from highly mobile tooth

Early loss may require:

• Space maintainers

• Orthodontic monitoring

Pharmacological Management

Usually not required in normal shedding.

Pain Control (if needed)

According to Tanzania STG:

• Paracetamol 10–15 mg/kg every 6–8 hoursOR

• Ibuprofen 5–10 mg/kg every 8 hours

Antibiotics

Only indicated when infection or abscess is present.

Complications of Abnormal Shedding

• Crowding of permanent teeth

• Malocclusion

• Impaction

• Ectopic eruption

• Speech problems

• Psychological concern

• Orthodontic treatment need

Prevention

Primary Prevention

• Early childhood oral hygiene education

• Fluoride exposure

• Caries prevention programs

• Balanced nutrition

Secondary Prevention

• Early management of dental caries

• Regular dental examination (every 6 months)

• Trauma prevention

Tertiary Prevention

• Space maintenance after premature extraction

• Orthodontic referral when eruption abnormality detected

Parent and Patient Education

Parents should be advised:

• Tooth mobility is normal between ages 5–12

• Do not forcibly remove teeth

• Encourage gentle wiggling only

• Maintain brushing twice daily

• Seek dental care if permanent teeth erupt incorrectly

• Visit dentist if tooth does not fall naturally

Prognosis

Excellent in physiological cases.

Early dental supervision ensures:

• Proper eruption

• Normal occlusion

• Reduced orthodontic complications