Diagnosis Of Vertical Root Fracture With Cone-beam Computerized Tomography In Endodontically Treated Teeth: Three Case Reports

A definitive diagnosis of vertical root fracture (VRF) is often a challenging task for clinicians. This is because two dimensional periapical radiographs are usually unable to detect the fracture line due to the direction of the X-ray beam. This report presents a set of 3 cases of endodontically treated teeth that were diagnosed with VRFs based on findings from clinical, radiographic, and cone-beam computerized tomographic (CBCT) examinations. After extraction, VRFs were confirmed in all cases. The presence of periodontal pockets or other signs which would compromise the correct diagnosis could not be detected in all three cases. Fracture lines were only visible with the aid of CBCT which provided useful information for the diagnosis and management of VRF. 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Fuss, Z., Lustig, J., Ganor, Y., Kaffe, I., Radiographic features of vertically fractured, endodontically treated maxillary premolars (1999) Oral Surg Oral Med Oral Pathol Oral Radiol Endod, 88 (3), pp. 348-352Nesari, R., Rossman, L.E., Kratchman, S.I., Cone-beam computed tomography in endodontics: Are we there yet (2009) Compend Contin Educ Dent, 30 (6), pp. 312-320Kamburoǧlu, K., Ilker Cebeci, A., Gröndahl, H.G., Effectiveness of limited cone-beam computed tomography in the detection of horizontal root fracture (2009) Dent Traumatol, 25 (3), pp. 256-261Mora, M.A., Mol, A., Tyndall, D.A., Rivera, E.M., In vitro assessment of local computed tomography for the detection of longitudinal tooth fractures (2007) Oral Surg Oral Med Oral Pathol Oral Radiol Endod, 103 (6), pp. 825-829Hannig, C., Dullin, C., Hülsmann, M., Heidrich, G., Three-dimensional, non-destructive visualization of vertical root fractures using flat panel volume detector computer tomography: An ex vivoin vitro case report (2005) Int Endod J, 38 (12), pp. 904-913Nair, M.K., Nair, U.D.P., Gröndahl, H.G., Webber, R.L., Wallace, J.A., Detection of artificially induced vertical radicular fractures using tuned aperture computed tomography (2002) Eur J Oral Sci, 109 (6), pp. 375-379Varshosaz, M., Tavakoli, M.A., Mostafavi, M., Baghban, A.A., Comparison of conventional radiography with cone beam computed tomography for detection of vertical root fractures: An in vitro study (2010) J Oral Sci, 52 (4), pp. 593-597Bernardes, R.A., de Moraes, I.G., Húngaro Duarte, M.A., Azevedo, B.C., de Azevedo, J.R., Bramante, C.M., Use of cone-beam volumetric tomography in the diagnosis of root fractures (2009) Oral Surg Oral Med Oral Pathol Oral Radiol Endod, 108 (2), pp. 270-277Hassan, B., Metska, M.E., Ozok, A.R., van der Stelt, P., Wesselink, P.R., Comparison of five cone beam computed tomography systems for the detection of vertical root fractures (2010) J Endod, 36 (1), pp. 126-129Valiozadeh, S., Khosravi, M., Azizi, Z., Diagnostic accuracy of conventional, digital and Cone Beam CT in vertical root fracture detection (2011) Iran Endod J, 6 (1), pp. 15-20Patel, S., Dawood, A., Wilson, R., Horner, K., Mannocci, F., The detection and management of root resorption lesions using intraoral radiography and cone beam computed tomography-an in vivo investigation (2009) Int Endod J, 42 (9), pp. 831-838Fuss, Z., Lustig, J., Katz, A., Tamse, A., An evaluation of endodontically treated vertical root fractured teeth: Impact of operative procedures (2001) J Endod, 27 (1), pp. 46-48Cotton, T.P., Geisler, T.M., Holden, D.T., Schwartz, S.A., Schindler, W.G., Endodontic applications of cone-beam volumetric tomography (2007) J Endod, 33 (9), pp. 1121-1132Patel, S., Dawood, A., Ford, T.P., Whaites, E., The potential applications of cone beam computed tomography in the management of endodontic problems (2007) Int Endod J, 40 (10), pp. 818-830Patel, S., Dawood, A., Whaites, E., Pitt Ford, T., New dimensions in endodontic imaging: Part 1.Conventional and alternative radiographic systems (2009) Int Endod J, 42 (6), pp. 447-462Rud, J., Omnell, K.A.K.E., Root fractures due to corrosion diagnostic aspects (1970) Eur J Oral Sci, 78 (1-4), pp. 397-403Tofangchiha, M., Adel, M., Bakhshi, M., Esfehani, M., Nazeman, P., Ghorbani Elizeyi, M., Digital radiography with computerized conventional monitors compared to medical monitors in vertical root fracture diagnosis (2013) Iran Endod J, 8 (1), pp. 14-17Shemesh, H., van Soest, G., Wu, M., Wesselink, P.R., Diagnosis of vertical root fractures with optical coherence tomography (2008) J Endod, 34 (6), pp. 739-742Zou, X., Liu, D., Yue, L., Wu, M., The ability of cone-beam computerized tomography to detect vertical root fractures in endodontically treated and nonendodontically treated teeth: A report of 3 cases (2011) Oral Surg Oral Med Oral Pathol Oral Radiol Endod, 111 (6), pp. 797-801Edlund, M., Nair, M.K., Nair, U.P., Detection of vertical root fractures by using cone-beam computed tomography: A clinical study (2011) J Endod, 37 (6), pp. 768-772Katsumata, A., Hirukawa, A., Noujeim, M., Okumura, S., Naitoh, M., Fujishita, M., Ariji, E., Langlais, R.P., Image artifact in dental cone-beam CT (2006) Oral Surg Oral Med Oral Pathol Oral Radiol Endod, 101 (5), pp. 652-657Soǧur, E., Baksi, B., Gröndahl, H.G., Imaging of root canal fillings: A comparison of subjective image quality between limited cone-beam CT, storage phosphor and film radiography (2007) Int Endod J, 40 (3), pp. 179-185Parirokh, M., Ardjomand, K., Manochehrifar, H., Artifacts in cone-beam computed tomography of a post and core restoration: A case report (2012) Iran Endod J, 7 (2), pp. 98-101(2011) Oral Surg Oral Med Oral Pathol Oral Radiol Endod, 111 (2), pp. 234-237. , Use of cone-beam computed tomography in endodontics Joint Position Statement of the American Association of Endodontists and the American Academy of Oral and Maxillofacial RadiologyPatel, S., New dimensions in endodontic imaging: Part 2.Cone beam computed tomography (2009) Int Endod J, 42 (6), pp. 463-47

Evaluation Of Endodontic Treatments Performed By Students In A Brazilian Dental School.

The aims of this study were to evaluate the clinical outcomes of root canal treatments performed by final-year students in the Dental School of Piracicaba, State University of Campinas, SP, Brazil, during the year 2000 and to evaluate the success rate of these treatments at follow-ups conducted one and three years later (2001-03). All 579 endodontic treatments performed by final-year students were selected for this investigation. Detailed personal and dental history was obtained from the patient's records. Clinical and radiographic follow-up examinations were performed. For 78.8 percent of the cases, dental caries was recorded as the cause for performing endodontic treatment; for 8.8 percent, prosthetic reasons were given; and for 12.4 percent, failure of the endodontic treatment was the reason. The largest percentage (30.7 percent) of recalled patients was examined after one year; the success rate at this follow-up evaluation ranged from 83 percent to 96 percent depending on the pulp status prior to the root canal treatment. After three years, only 8 percent of treated patients returned; assessment for them revealed a 75.5 percent success rate. Dental caries is still the main reason for endodontic treatment. This level of success of the root canal treatment in a Brazilian dental school is similar to other reports in the literature.69101161117

The first autochthonous case of American trypanosomiasis in the State of Acre, Brazil, and its correlation with the strains identified in the human case and the sylvatic triatomines in the area

Results of entomological and epidemiological investigations on the first autochthonous human case of American trypanosomiasis in the State of Acre, Brazil are presented. There are no synanthropic triatomine vectors in the area. Possibility of congenital or transfusional transmission is completely excluded. However, it is not possible to establish whether transmission was the result of house invasion of a silvatic triatomine species or contamined food. Two strains of Trypanosoma cruzi were isolated: one from humans which was called "Acre-Humana" (AH) and another from Rhodnius robustus collected in palm-trees (Attalea sp.) near the dwelling, called "Acre-Silvestre" (AS). There is a close relationship between the strains of T. cruzi studied, in both morphological and pathogenic aspects. These strains are pathogenic for baby mice, showing an infection rate of one hundred per cent. In both strains, the mice infection was very severe, with high lethality and parasitemia rates and a short prepatente period. In both strains during the acute infection phase, leishmanial forms were easily seen in tissue sections, specially in mice hearts and livers. Mice which recovered from infection with the AH and AS strain had a high resistence against reinoculations with the Y strain of T. cruzi. AH and AS strains were easily cultivated in blood-agar medium and Warren's liquid medium and infected six species of triatomine tested. The results confirm once again the existence of natural focci of American trypanosomiasis in the area.São apresentados os resultados obtidos na investigação entorno-epidemiológica realizada no estudo do primeiro caso humano autóctone de tripanossomíase americana no Estado do Acre (Brasil). A investigação demonstrou ausência de domiciliação triatomínea, ficando descartada totalmente a possibilidade de transmissão congênita ou transfusional. Não foi possível verificar se a transmissão foi metaxênica através da invasão domiciliar de barbeiro silvestre, ou se por via digestiva através de alimentos contaminados. Foram isoladas duas cepas de Trypanosoma cruzi, uma do caso humano chamada Acre-Humana (AH) e outra de Rhodnius robustus coletados em palmeiras uricuri (Attalea sp) nas proximidades da casa, chamada Acre-Silvestre (AS). Ficou comprovada a existência de correlação entre os caracteres morfobiológicos e patogênicos das duas amostras estudadas: mostraram-se patogênicas para camundongos, infectando 100% dos animais, quer com formas metacíclicas de triatomíneos, quer com formas sanguícolas de doadores em fase aguda. A infecção dos camundongos nas duas amostras é grave com curto período pré-patente, parasitemia elevada e taxa de letalidade alta. Em ambas as cepas, em fase aguda, são abundantes ninhos de amastigotas, principalmente no coração e fígado. As amostras AH e AS conferem aos animais que sobrevivem boa resistência contra infecções pela amostra Y. Cultivaram-se facilmente em meios líquidos e semi-sólidos e infectaram experimentalmente seis espécies de triatomíneos. Os resultados comprovam mais uma vez a presença de focos naturais desta parasitose na região

Sobrevivência e ocorrência de muda em Triatoma infestans Klug (Hemiptera, Reduviidae) após choque de temperatura

Survival and molting occurrence were studied in specimens of Triatoma infestans over 30 days after temperature shocks. Hyperthermal and hypotermal shocks could be found to affect both survival and molting incidence as a function of temperature and period of the developement phase and sex of the specimens. Considering the various test conditions, the shock at 0°C for 12 h was found to elicit the most deleterious effect, whereas shocks at 40°C and 0°C even for 1 h are interpreted as affecting the hormonal balance which controls molting. Cases of a rise in post-shock survival are suggested to have been favored by heat-shock protein action.A sobrevivência e a ocorrência de mudas em espécimes de Triatoma infestans foram estudados num período de 30 dias após choques de temperatura. Foi demonstrado que choques hipertérmico e hipotérmico interferem nesses processos, na dependência da temperatura do choque, tempo de sua duração, fase de desenvolvimento e sexo dos espécimes. Dentre as situações experimentais utilizadas, o choque a 0°C por 12 h pareceu produzir a ação mais deletéria, porém choques a 40°C e 0°C mesmo por uma hora são admitidos como afetando o desenvolvimento hormonal que controla a muda. Casos de aumento de sobrevivência pós-choque são sugeridos como tendo sido favorecidos por ação de proteínas de choque térmico

The application of omics in ruminant production: a review in the tropical and sub-tropical animal production context

The demand for animal products (e.g. dairy and beef) in tropical regions is expected to increase in parallel with the public demand for sustainable practices, due to factors such as population growth and climate change. The necessity to increase animal production output must be achieved with better management and production technologies. For this to happen, novel research methodologies, animal selection and postgenomic tools play a pivotal role. Indeed, improving breeder selection programs, the quality of meat and dairy products as well as animal health will contribute to higher sustainability and productivity. This would surely benefit regions where resource quality and quantity are increasingly unstable, and research is still very incipient, which is the case of many regions in the tropics. The purpose of this review is to demonstrate how omics-based approaches play a major role in animal science, particularly concerning ruminant production systems and research associated to the tropics and developing countriesinfo:eu-repo/semantics/acceptedVersio