The basis for dental implant success comes not only with the titanium implant osseointegration but also depends on other factors such as the development of a soft tissue barrier, which protects the peri-implant bone from the oral environment. The characteristics of surfaces in contact with peri-implant soft tissues may affect the capacity of peri-implant mucosal cells to create a tight seal around the implant, thus influencing long-term implant success. Many histological studies on animals have been conducted on different materials to better understand their influence on peri-implant soft tissues, with the limitation that results from animal studies cannot be fully translated in humans. The aim of this review paper was to analyze the literature focusing on histological clinical studies in humans which have examined different materials or different surface treatments and their effects on peri-implant soft tissues. The research was conducted according to the following PICO question: “Do different implant/abutment materials affect peri-implant soft tissues adhesion and health?”. Nine articles were analyzed in this review. The results of this review show the influence of different abutment materials on the peri-implant soft tissues, and the need of further research regarding the effect that abutment materials, surface treatments, and surface properties have on soft tissues.

Supernumerary teeth may be encountered as an incidental finding on a radiograph. When impacted, they may be associated with clinical signs related to different problems such as failure of eruption, teeth displacement, root resorption or cystic lesions. They may occur in primary and permanent dentition, in both the maxilla and mandible and can be single or multiple in patients with syndromes. Mesiodens is the most commonly impacted tooth and appears between the central maxillary incisors in pediatric ages. Supernumerary teeth distal to the third molar are rare, usually impacted and referred to as a distomolar. A 46-year-old male consulted with the main complaint of pain on the left side of the maxilla. A panoramic radiograph revealed a right impacted maxillary fourth molar located posterior to the third molar associated with a pericoronal radiolucency. The supernumerary tooth was removed surgically under local anesthesia and the pericoronal lesion enucleated. Histopathological examination was consistent with the diagnosis of a dentigerous cyst associated with an impacted distomolar. Healing was uneventful, and the patients remained asymptomatic. The occurrence of a maxillary distomolar is rare and even rarer the association with a dentigerous cyst.

We present a 45-year-old black woman diagnosed with a florid cemento-osseous dysplasia (FCOD) affecting the right lower quadrant and the anterior mandibular region. The patient requested dental implants to rehabilitate the edentulous central lower incisors area (teeth # 31 and # 41) corresponding to a periapical cemento-osseous dysplasia (PCOD). Successful osseointegration of the two implants was obtained using a two-step procedure in order to limit the risk of complications associated with implant placement. Follow-up at one year showed no recurrence and good implant stability. Due to the abnormal quality of the bone in cemento-osseous dysplasia (COD), implant placement is generally avoided, and no other case reports have been reported in the literature in patients affected by PCOD. The present case suggests that in an appropriate clinical setting, implant placement may be a successful procedure.

Background:After tooth extraction the alveolar ridge undergoes considerable volumetric and qualitative changes. A volumetric decrease between 35% and 60% is expected without any treatment of extraction sockets. Alveolar Ridge Preservation strives for controlling the ridge changes after tooth extraction. Regardless of biomaterial used and of technique performed, this procedure cannot fully counteract tissue changes after tooth extraction.