RESUMO
Dental implants are thought to be implanted for life, but throughout their lifespan, they function in aggressive oral environment, resulting in corrosion of the material itself as well as possible inflammation of adjacent tissues. Therefore, materials and oral products for people with metallic intraoral appliances must be chosen carefully. The purpose of this study was to investigate the corrosion behavior of common titanium and cobalt-chromium alloys in interaction with various dry mouth products using electrochemical impedance spectroscopy (EIS). The study showed that different dry mouth products lead to different open circuit potentials, corrosion voltages, and currents. The corrosion potentials of Ti64 and CoCr ranged from -0.3 to 0 V and -0.67 to 0.7 V, respectively. In contrast to titanium, pitting corrosion was observed for the cobalt-chromium alloy, leading to the release of Co and Cr ions. Based on the results, it can be argued that the commercially available dry mouth remedies are more favorable for dental alloys in terms of corrosion compared to Fusayama Meyer's artificial saliva. Thus, to prevent undesirable interactions, the individual characteristics of not only the composition of each patient's tooth and jaw structure, but also the materials already used in their oral cavity and oral hygiene products, must be taken into account.
RESUMO
The pulp and periodontium have obvious relationships that have been described in many studies. Pulp infections may affect periodontal tissues and vice versa. Teeth with endo-perio lesions have a worse prognosis than isolated endodontic or periodontal lesions. Elimination of endodontic and periodontal infections is essential for successful treatment, so co-operation between endodontists and periodontists is necessary. In this clinical case, a 44-year-old male presented with primary periodontal disease with secondary endodontic involvement in his lower right canine because of aggressive periodontitis. There was 10 mm of clinical attachment loss and 8 mm periodontal pocket mesial from the tooth and bone radiolucency periapical and lateral from the root. Periodontal therapy was followed by endodontic treatment. Periodontal therapy included root scaling and planing, treatment of the periodontal pocket with ozone gas, systemic antibiotics, oral hygiene instructions, and chlorhexidine rinsing. Endodontic therapy included root canal instrumentation with rotary endodontic files, irrigation, root canal treatment with ozone gas, and obturation with lateral compaction. Radiographs at a 6-month follow-up appointment showed complete healing of the periapical lesion and alveolar bone lateral to the root. Using an interdisciplinary approach to treat endo-perio lesions provides favorable clinical outcomes. Ozone therapy is beneficial for the successful treatment of endo-perio lesions with narrow periodontal pockets in patients with aggressive periodontitis and poor prognosis.
RESUMO
To investigate the prevalence of oral diseases and to assess the simplified oral hygiene (OHI-S) index, the decayed-missing-filled teeth (DMFT) index and the community periodontal index (CPI)among inmates incarcerated in the Russian Federation. The sample consisted of 175 male and 130 female inmates serving sentences at corrective colonies in the region of Kirov, Russia. Information about level of education, time of incarceration and general health status were collected via personal interviews. Additionally, the inmates underwent extra- and intraoral exams in the search for clinically detectable lesions and oral diseases. A quantitative analysis of the oral health was established through the assessment of OHI-S, DMFT and CPI indices. These indices were statistically tested for their association with inmates' time of incarceration and level of education. Complete dentition, partial tooth loss and edentulism were observed in 10.5%, 81.9% and 7.5% of the sample. Dental caries (92.4%), periodontal diseases (55.7% periodontitis and 33.1% gingivitis), diseases of pulp and periapical tissue (87.9%) were the most prevalent findings. The most prevalent disease in the oral mucosa was the cheilitis (64.9%) followed by glossitis (21.9%) and palatal nicotinic leukokeratosis (28.8%). OHI-S and DMFT indices showed strong positive association with time of incarceration and level of education. Higher index scores were observed in inmates in prison for a longer time and with a lower level of education (p=0.001). These outcomes highlight the need for promoting oral health care policies to inmates incarcerated in prisons of the Russian Federation.
Investigar a prevalência de doenças bucais e os índices de higiene oral simplificado (IHO-S), dentes cariados-perdidos-restaurados (CPO-D) e índice periodontal comunitário (CPI) em detentos daFederação Russa. A amostra consistiu de 175 homens e 130 mulheres encarceradas em colônias corretivas na região de Kirov, na Federação Russa. Informações relacionadas ao nível educacional, tempo de encarceramento e condição de saúde geral foram coletadas por meio de entrevistas. Adicionalmente, exames extra e intrabucais foram realizados com a finalidade de detectar possíveis doenças e lesões em dentes e tecidos moles. Análise quantitativa da saúde bucal foi conduzida por meio da investigação dos índices IHO-S, CPO-D e CPI. Estes índices foram testados estatisticamente em face de sua associação com o nível educacional e tempo de encarceramento dos detentos. Dentição completa, parcial e edentulismo foram observadas em 10.5%, 81.9% e 7.5% da amostra. Cárie (92.4%), doença periodontal (55.7% periodontite e 33.1% gengivite) e doenças pulpares (87.9%) foram as mais prevalentes. Queilite (64.9%), glossite (21.9%) e estomatite nicotínica no palato (28.8%) foram as lesões mais prevalentes em mucosa. Forte Associação positiva foi verificada entre os índices IHO-S e CPO-D e o nível educacional e tempo de encarceramento dos detentos. Quanto menor o nível educacional e maior o tempo de encarceramento, maiores foram os referidos índices (p=0.001). Conclusão:Estes resultados apontam para a necessidade de promoção de políticas direcionadas ao cuidado bucal em detentos encarcerados na Federação Russa.
