Mucocutaneous Leishmaniasis with Rare Manifestation in the Nasal Mucosa and Cartilage Bone Septal.

Backgroud. Leishmaniasis is an infectious disease caused by protozoan of the genus Leishmania that can affect mucosal or cutaneous surfaces. It can manifest via buccal mucosa, associated with a skin lesion or as a secondary effect. Over the last 20 years, the number of cases of this disease is progressively increasing in Brazil. Therefore, the knowledge of this disease by health professionals is important in order to achieve a correct and early diagnosis, manly to prevent the deformities it may cause to the face. Case presentation. The aim of the present study was to report a case of mucocutaneous leishmaniasis with lesions on the palatine and pharyngeal mucosa in a patient with a previous report of rare lesions in the nasal mucosa and cartilage bone septal. Conclusions. We believe that the disclosure of such cases may be important for the correct and early diagnosis of these secondary injuries that may affect the oral mucosa.

Antimicrobial photodynamic therapy associated with bone regeneration for peri-implantitis treatment: A case report.

Antimicrobial photodynamic therapy (aPDT) has emerged as a promising alternative to promote bacterial elimination and crestal bone remodeling in patients affected by peri-implantitis, once it is able to access the implant microstructure at the most restricted sites with no damage to implant surface. This paper reports a 6-month follow-up of a patient with peri-implantitis treated by surgical approach with adjunct photodynamic therapy associated to guided bone regeneration. A full thickness open-flap was performed to allow directly mechanical debridement, followed by aPDT using methylene blue 200 µg/mL under red laser irradiation (660 nm, 100 mW, 9 J), providing decontamination of implant surface and surrounding tissue. Photosensitizer was washed twice with saline solution previously to guided bone regeneration, which was carried out using xenogeneic bone and resorbable collagen membrane. After 6-month follow-up, the use of aPDT as an adjunct therapy to the surgical treatment of peri-implantitis promoted sufficient decontamination, clear evidence of bone regeneration, and peri-implant health restoration.

Evaluation of primary stability in modified implants: Analysis by resonance frequency and insertion torque.

BACKGROUND: Changes in the macrogeometry of dental implants are known to influence primary stability and the osseointegration process. PURPOSE: The purpose of the present in vitro study was to evaluate the mechanical behavior of geometric changes in the apex region of dental implants. METHODS: Thirty-five cylindrical dental implants (Titamax Ti; Neodent) were machined at the apical third to reproduce the experimental groups: without apical cut (Wc), apical bi-split cut, apical tri-split cut, apical quadri-split cut (Qs). One (control group) (Titamax Ti Ex) (n = 7) without any modifications was added. The implants had the same final dimensions (4.1 x 11 mm2 ). All implants were inserted into artificial bone blocks and were evaluated by insertion torque and resonance frequency by ISQ values (Osstell). Two-tailed analysis of variance (One-way ANOVA) and Tukey's post-test (P < .05). RESULTS: Control and Qs implants showed a significant increase of the insertion torque (P < .001). For the resonance frequency, Wc and (control) implants had the greatest ISQ values. However, there's no significant difference between (control) and Qs for the ISQ values (P < .001). CONCLUSION: Within the limitations of the present study, the proposed geometries at the apical third of dental implants greatly influenced its insertion torque and primary stability in vitro.