We examined the feasibility of distance diagnosis of oral diseases, using transmission of digital images by email. Twenty-five cases of oral lesions were documented during a 12-month study in a primary care public health clinic in Paraná in Southern Brazil. Clinical electronic charts and images were produced and sent by email to two oral medicine specialists with a median of 10 years experience in the field. The consultants provided a maximum of two clinical hypotheses for each case. In 15 of the 25 cases (60%) both consultants made a correct diagnosis; in seven cases (28%) only one consultant made a correct diagnosis; and in three cases (12%) neither consultant made a correct diagnosis. Thus in 88% of cases, at least one consultant was able to provide the correct diagnosis. The results suggest that distant diagnosis can be an effective alternative in the diagnosis of oral lesions and that the using two distant consultants improves diagnostic accuracy. Primary care public health clinics may benefit from the use of email and digital cameras for telehealth in remote areas where oral medicine specialists are not available.

Objective: The purpose of this study was to evaluate the applicability of telediagnosis in oral medicine, through the transmission of clinical digital images by e-mail. Subjects and Methods: The sample included 60 consecutive patients who sought oral medicine services at the Federal University of Parana´, in the state of Parana´, located in southern Brazil. The clinical history and oral lesion images were recorded using clinical electronic charts and a digital camera, respectively, and sent by e-mail to two oral medicine consultants. The consultants provided a maximum of two clinical hypotheses for each case, which were compared with biopsy results that served as the gold standard. Results: In 31 of the 60 cases (51.7%), both consultants made the correct diagnosis; in 17 cases (28.3%), only one consultant made the correct diagnosis; and in 12 cases (20%), neither consultant made the correct diagnosis. Therefore, in 80% of cases, at least one consultant provided the correct diagnosis. The agreement between the first consultant and the gold standard was substantial (j = 0.669), and the agreement between the second consultant and the gold standard was fair (j = 0.574). Conclusions: The use of information technology can increase the accuracy of consultations in oral medicine. As expected, the participation of two remote experts increased the possibility of correct diagnosis.

The present results suggest that amoxicillin interferes with the initial stages of amelogenesis by causing structural changes in the ameloblasts and a reduction of the enamel matrix.

Two types of monofilament polypropylene mesh with different pore sizes, mass densities and burst strengths were used to repair two identical paired full-thickness abdominal wall defects in ten dogs, in order to compare their integration histology 90 days after implantation. On one side a standard mesh, Prolene (Ethicon), was sutured to the borders of the defect, while on the other a new ultralightweight macroporous mesh, Mpathy mesh, was used. There was a significantly greater densitometric proportion of mature (type I) collagen (58.38%) for Mpathy mesh compared to Prolene (34.05%, P=0.01). Although Prolene has 3.6 times the burst strength of Mpathy mesh, the implanted tissue strength was marginally greater for Mpathy mesh. We conclude that Mpathy mesh gives a surgical repair that is at least as strong as that provided by Prolene, along with a higher concentration of mature collagen and less fibrosis (P=0.07), in this canine histology model.

Transforming growth factor-b (TGF-b) is considered the main inducer of both the a-smooth muscle actin (a-SMA) phenotype and collagen synthesis and deposition and plays a significant role in the tissue repair and the development of fibrosis. Since the PRP constitutes an important source of TGF-b and its efficacy on the craniofacial bone repair remains controversy, the aim of this study was to evaluate the effect of PRP in the presence of levels of TGF-b on PRP samples, as well as in the presence of collagen III and a-SMAþ cells, while comparing these results by means of a histomorphometric analysis of the bone matrix and fibrous deposition on the bone repair. Four bone defects of 16 mm 2 were created on the calvarium of 21 rabbits. The surgical defects were treated with either particulate autograft, particulate autograft mixed with PRP and PRP alone. Animals were euthanized at 15, 30, and 45 days postoperative. Histomorphometric and immunohistochemical analyses were performed to assess repair time, as well as the expression of collagen III, and a-SMA. The histomorphometric results demonstrated intensive deposition of fibrous tissue while hinder bone deposition occurred in PRP groups. These results coincided with higher values of the TGF-b on the PRP sample, also larger occurrence of diffuse collagen III deposition and higher presence of a-SMAþ cells spread among the fibrous tissue. Thus, the higher levels of TGF-b associated with the both expression of collagen III and a-SMA on defect treated with PRP suggest that its biomaterial induce an effect that can be considered similarly to a fibroproliferative disorder. ß