RESUMEN
Occurrence of distal caries in lower second molars has been associated with impacted mandibu-lar third molars especially mesioangular impactions. Caries detection and restoration can be difficult and if it progresses, root canal treatment or extraction of the second molar may be necessary. The aim of this retrospective study was to evaluate the incidence of caries on distal aspect of mandibular second molars in patients referred for corresponding third molar assessment and to identify its association with angular position and depth of the impacted mandibular third molars based on the classification of Pell and Gregory. Two hundred impacted mandibular third molars were assessed in a total of one hundred and sixty seven patients presenting to the Department of Oral and Maxillofacial Surgery, Islamic International Dental College and Hospital from April 2011 to July 2012. These patients had age range between 18-57 [mean age of 37years] According to this study, 42.5% cases show caries on distal aspect of mandibular second molars. Incidence of caries with mesioangular impacted third molars was 51%. Majority of these mesioangular cases were level B and Class I as per Pell and Gregory Classification. Distal caries found in association with horizontal impactions was 29.10%, vertical impactions 15.2% and distoangular impactions 4.7%. No caries was found in relation to transverse impactions. It was concluded that distal caries in second molars is common, especially in cases of mesioangular mandibular third molar impactions and prophylactic removal of these impacted teeth may be considered appropriate. If such a third molar is left in situ, close monitoring is necessary
RESUMEN
Dental implant is a permanent metal fixture anchored into the jaw bone topped with individual replacement of a tooth, teeth or a bridge that screws or cements into the implant fixture. The successful outcome of implant procedure depends on a series of patient-related and procedure-dependent parameters. Predictors of success or failure are related to quality and quantity of the bone at the intended site, length of implant, axial loading, operator skills, patient's overall general health, age, habits and oral hygiene. Although long-term studies continue to show improving success rates for implants, failures occur unavoidably. Successful provision of dental implants to patients who have lost tooth/teeth and the surrounding bone, relies on careful gathering of clinical and radiological information, interdisciplinary communication and input, a detailed treatment planning and regular evaluation of the patients. Under proper conditions and diligent patient maintenance, implants can last for lifetime. The objective of this study is to assess and evaluate patients reporting to Islamic International Dental College and Hospital receiving implant therapy. We, very carefully conducted an evaluation of patients in order to find out our success rate. From August 2010 to December 2011, 31 patients received 68 implants. Vast majority of implants [63] were of Bio-Horizon of USA and rest [5] were Straumann implants of Switzerland. Out of these 68 implants, we had 3 failed cases. Further-more, we looked in detail the likely reasons of these failures