ABSTRACT
Se presentó a la Cátedra de Endodoncia de la Facultad de Odontología de la Universidad de Buenos Aires un paciente masculino de 62 años de edad que al examen clínico presentaba una fístula vestibular en la zona de la pieza 1.2 y dolor a la percusión. Al examen radiográ-fico se identificó una lesión apical extensa abarcando las piezas dentarias 1.2 y 1.1 endodónticamente trata-das con alteración severa de la anatomía del espacio endodóntico, así como la presencia de postes metáli-cos que no respetaban el eje del canal radicular. Ante el análisis tomográfico se observó una perforación de la pieza 1.2 y una lesión periapical extensa afectando ambas corticales (vestibular y palatina). Se decidió un abordaje microquirúrgico con técnicas de regenera-ción ósea guiada (ROG) y se realizaron los controles clínico-tomográficos a los 6, 12 y 24 meses. Por otro lado, se evaluó con micromografía de rayos X la ana-tomía de los ápices radiculares resecados. La lesión extirpada fue analizada histológicamente (AU)
A 62-year-old male patient attended the Endodontics department of the Buenos Aires University. He was examined clinically and a vestibular fistula in 1.2 area and pain under percussion were found. Radiographic examination identified an extended periapical lesion compromising teeth 1.2 and 1.1 with endodontic treatment severely altering the root canal anatomy, as well as metallic cast posts that did not preserve root canal axis. Regarding the tomographic analysis, a vestibular root perforation was observed (1.2), and both, vestibular and palatal corticals, were affected. We decided to perform a surgical approach with guided bone regeneration techniques (GBR). Clinical-CBCT controls were done at 6, 12 and 24 months. Furthermore, the anatomy of the resected root apex-es was evaluated with X ray microtomography. The removed lesion was histologically analyzed (AU)
Subject(s)
Humans , Male , Middle Aged , Periapical Periodontitis/surgery , Argentina , Schools, Dental , Cone-Beam Computed Tomography/methods , Membranes, ArtificialABSTRACT
The risk of HBV and HCV liver infection in kidney graft recipients was evaluated in 35 patients. All were tested for anti-HBc, HBsAg, HBeAg, anti-HBs, Anti-HBe, anti-HCV (c-100-3 and c-100-3, c-22, 33-c), anti-HDV and anti-HIV by ELISA, and for HBV-DNA by hybridization. Liver biopsy, immunostaining for HBcAg and Knodells hepatic inflammatory index were performed in 18. Mean time elapsing form transplant to inclusion was 20.7 months (range 1-108). HBsAg was the only marker searched for prior to transplant. Twenty six (74.2
) HBsAg+, (3 HBeAg+ and 3 anti-HBe+), 7 (20
) anti-HBs+ and 3 (8.5
) isolated anti-HBc. Anti-HCV (C-100-3) was positive in 9/32 (28.1
), while 2nd. generation anti-HCV was positive in 20/35 (57.1
) cases. No false positives for 1st. generation test were found. Both anti-HDV and anti-HIV were negative in all the sample. Raised aminotransferases were present in 13/30 (43.3
), 7 in anti-HCV+, one in HBsAg+ and 3 in HBsAg+/HCV+ cases, but normal in 17/30 (56.6
). History of Transfusion and Hemodialysis time showed no significant differences between anti-HCV+ and anti-HCV negative cases. Biopsy disclosed 10 chronic persistent hepatitis (CPH), one chronic active hepatitis (CAH) with cirrhosis, one inactive cirrhosis (Ci) 4 minimal lesions (MHL) and 2 normal. Seven CPH, 3 MHL. one normal and both cirrhosis cases proved anti-HCV+. HBsAg was positive in the single CAH, in 2 CPH and in one MHL.(ABSTRACT TRUNCATED AT 250 WORDS)