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Introduction: A series of risk factors has been linked to the development of peri-implant disease, including: poor oral hygiene, diabetes, smoking and history of periodontitis. The microbiota associated with peri-implantitis is like that associated with periodontitis, and it was suggested that the deep periodontal pockets may act as a reservoir of bacteria and impacting the implant success rate. The objective of this work was to evaluate the parameters of implant success in patients with history of periodontal disease.

Methods: A systematic review of the literature from 2004 to 2014 was carried out with an electronic search strategy in Medline, Embase, Cochrane Library and Dentistry and Oral Sciences Sources, supplemented by a manual search in journal of periodontology and implant dentistry.

Results: The strategy has found 347 papers for inclusion in the study and after the application of filters and criteria; only 4 scientific articles were selected. The total population included in these 4 studies was 1945 subjects, including 1640 with periodontal disease and 305 without history of periodontitis.

Conclusion: Subject to the methodological quality of the articles selected, it can be concluded that the history of periodontitis is not a contraindication to implant placement, but the rate of implant success depend on the severity and form of periodontitis. Therefore, the decision making of implant therapy in patients with history of periodontal disease must necessarily include a rigorous program of supportive periodontal therapy for implant long-term stability.

Key words: dental implant, success rate, history periodontitis

Congenital cervico-oro-facial malformations are structural, functional, behavioral and metabolic defects that develop during the period of organo-facial orogenetic organogenesis affecting the quality of life of patients. The purpose of this work was to contribute to the study of congenital cervico-oro-facial malformations. This is a descriptive study conducted in the Donka National Hospital Odonto stomatology and Maxillofacial Surgery Department over a period of one month, including all patients with oral or cervico-facial congenital malformation who have subject of diagnosis, treatment and post-treatment follow-up. 28 cases of congenital cervico-oro-facial malformations were collected at a frequency of 35.44%. Patients aged between 0 and 10 years were the most numerous. The sex ratio was 1.15 in favor of the male sex. Conakry was the largest provider of patients with a rate of 78.58%. And 25% of patients had previously tried treatment elsewhere before consulting our service. The labial clefts were the most numerous, ie 25%. In our series the plasty of which Z-Plasty was the most realized act. All of our patients underwent analgesic treatment during the hours and days following the procedure. 98.70% of cases were subjected to antibiotic therapy. The follow-up procedure was favorable in 92.86% of the cases. Congenital cervico-oro-facial malformations are frequent, diverse and varied. Postnatal diagnosis is easy and early. Cleft lip was the most common nosological form. Only the surgery was performed in all our patients.

Keywords: Malformations, congenital, oro-cervico-facial

As part of routine radiographic exploration of the jaw bones or during an orthodontic check-up, it is highly probable that asymptomatic areas of osteosclerosis, which are most often located near the apexes of the surrounding teeth, will be discovered fortuitously in adolescents. These osteosclerosis areas are localized and clearly delineated radiopaque foci, non-expanding in growth and elliptical or irregular in shape. Among these radiopaque lesions, we note dense bone island which is associated with inflammatory or infectious pathological processes, often in relation to the apexes of the permanent mandibular molars. The objective of our work is to clarify this pathological entity in order to help the practitioner identify and differentiate it from other radiopaque lesions of the jaws, as well as to be able to provide early and correct management of this lesion.

Keywords : condensing osteitis, radiopacity, sclerosis.

The complete removable prosthesis, despite all the progress that dentistry has made, is still a very popular therapy. Currently, stabilization by implant significantly improves comfort and the prosthesis functions.

However, in a number of cases, bone volume deficits may contraindicate the use of standard implants without prior crestal adjustment, when this adjustment is not desired by the patient due to its higher cost, longer treatment time or number of procedures, etc., or by the practitioner for anatomical or medical reasons, mini implants remain the best alternative.

Stabilization by mini implants is a recognized technique by the FDA (Food and Drug Administration: May 12, 1998). Its success rate as high as that of larger diameter implants. The immediate functional comfort and the moderate cost of this technique explain its success.

The placement of four mini implants in the edentulous mandible to retain a lower complete overdenture is an acceptable treatment modality. Survival rates are satisfactory for the first 2 to 3 years after placement and loading. Failures are most common within the first year of placement. Flapless surgery, immediate loading, simplicity, and reduced cost make this system attractive to both patients and operators alike.

Keywords: complete dentures, mini implants, survival, balance

Complete removable denture retained by implants is a frequent therapeutic option recognized for its functional and psychological aesthetic rendering. It uses retention devices in the form of axial attachments or anchor bars. The Locator® axial attachment is one of the most widely used means due to its simplicity and many advantages. Thus this work proposes to describe it, specify its particularities and expose through a clinical illustration the process of its placement in mouth.

Key words: Implant supported overdenture- Attachments- Locator® -Implant - complete edentulous