These are sometimes mistakenly referred to as labialalveolars, though they actually have a post-alveolar or palatal articulation instead of a true alveolar one.
This blood clot is replaced with granulation tissue which consists of proliferating fibroblasts and endothelial cells derived from remnants of the periodontal membrane, surrounding alveolar bone and gingival mucosa.
It enables orthodontists and dentists placing dental implants, or completing esthetic dentistry, to accurately determine the amount of facial alveolar bone available before initiating treatment.
Erythrocyte invasion is enhanced when blood flow is slow and the cells are tightly packed: both of these conditions are found in the alveolar capillaries.