Spontaneous space closure research 

Researchers investigated the success rate of spontaneous space closure in patients aged 6-15 years old after extracting the first permanent molar. They analyzed the engagement of the second premolar, angulation of the second permanent molar and the presence of third molars to see if any were factors in successful closure.

The study assessed closure success radiographically when patients were 19 to 20 years old. Findings revealed a high spontaneous closure rate (84.3%) among patients not receiving orthodontic treatment, with higher rates in the maxilla (94.1%) compared to the mandible (74.1%). Age at extraction (with a cutoff at 12 years) and second permanent molar developmental stage significantly affected closure in maxilla and mandible respectively.

While some studies suggest optimal extraction timing, this study found no evidence supporting certain factors like premolar engagement or second permanent molar angulation as significant contributors to successful closure. 

Read more: PracticeUpdate

 

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