Representative histologic images depicting frequent healing patterns for each group depicting the region comprising bone, periodontal ligament region (PDL), and cementum (C).

<p>(a) Group A primarily presented full bone and full defect perimeter cementum regeneration (cellular [CC] and full thickness repair), along with full periodontal ligament regeneration (RPDL) with fibers bridging the gap between the cellular cementum and newly formed bone. (b) Group B primarily presented primarily full bone regeneration along with partial cementum coverage (mostly celular at covered regions) and partial periodontal ligament regeneration. (c) Group C presented full bone and cementum regeneration (partial thickness, acellular) along with partial periodontal ligament regeneration. (d) Group D presented full bone regeneration with partial (mostly acellular) or no cementum regeneration, along with partial or no periodontal ligament regeneration. (e) Group E presented full bone regeneration with partial (mostly acellular) or no cementum regeneration, along with partial or no periodontal ligament regeneration.