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Updated: Jul 13, 2026
07:26
Systematic Assessment of Mammalian Skull Specimens for Dental and Temporomandibular Joint Pathology
Published on: August 22, 2022
A second deciduous molar impacted in right maxillary sinus: a long-term follow-up
1Division of Craniofacial Orthodontics, Department of Dentistry, Chang Gung Memorial Hospital, 199, Tung-Hwa North Road, Taipei, Taiwan, R.O.C.
Chang Gung Medical Journal
|June 22, 2001
Summary
Primary tooth impaction is rare. A high-level impacted maxillary second deciduous molar in a child with cleft lip/palate was monitored, showing significant resorption over 7 years.
Area of Science:
- Pediatric Dentistry
- Oral and Maxillofacial Surgery
- Developmental Biology
Background:
- Primary tooth impaction is uncommon, with causes including tooth bud issues, dentomaxillofacial disharmony, tumors, or cysts.
- This case involves a 6-year-old female with a complete left cleft lip and palate.
Observation:
- A maxillary right second deciduous molar was impacted high, near the maxillary sinus.
- Radiographic follow-up every 2 years was chosen to avoid surgical trauma to surrounding tissues and permanent teeth.
Findings:
- After 7 years, the impacted deciduous molar was nearly fully resorbed (approx. 90%).
- Resorption has continued without significant pathological changes, suggesting a natural resolution process.
Implications:
- Long-term radiographic monitoring is crucial for impacted primary teeth, especially near vital structures like the maxillary sinus.
- This case highlights the potential for spontaneous resorption of impacted deciduous teeth, informing management strategies.
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