Triple-A syndrome, also known as Allgrove syndrome, is a rare autosomal recessive disorder. The classical features of this syndrome are achalasia, adrenal insufficiency, and alacrima. Recently, dental impairment has been the subject of several case reports and reviews. However, this abnormality remains under-diagnosed. We represent the case of a 23-year-old male patient who was diagnosed with Allgrove syndrome at the age of 3. He suffered from many oral manifestations of this syndrome and especially premature loss of permanent teeth.