To investigate knowledge and practices towards preventive dentistry among undergraduate dental students and interns in Qassim university. 1. To assess the level of knowledge of preventive measures in dentistry among undergraduate dental students and interns in Qassim university. 2. To evaluate the practices of undergraduate dental students and interns in Qassim university in preventive dentistry. A ninety seven participants were involved in this study 28 third year students, 25 fourth year students, 24 fifth year students and 19 dental interns. The questionnaire was adopted from previous similar studies carried out in Nairobi dentists and Iranian dentists. Conclusions Based on the findings of this study, the following was concluded: 1. Undergraduate students and dental interns in Qassim University had vast knowledge towards preventive dentistry. 2. Undergraduate students and dental interns in Qassim University carried out most of the practices involved in preventive dentistry.

The current study presents a case of iatrogenic mid-root perforation with a maxillary central incisor in a 59 -year-old female patient, with a history of trauma in that region. Perforations that occur in the mid-root region pose a challenge to the dentist due to inadequate access to the perforation site. Perforations also increase the chance of inflammatory reaction in the periodontal ligament. A concept for the repair of root perforations is presented using a resorbable collagen matrix which reconstructs the outer shape of the root and facilitates the adaptation of MTA. The current clinical case shows successful root perforation repair with follow up using aforementioned technique.

Comparative evaluation of wettability of 3 different root canal sealers on dentin. 30 dentin blocks were prepared from single rooted maxillary anterior teeth. After storage and adequate cleaning protocol, they were surface treated with 17% EDTA (Glyde File Prep, Dentsply Maillefer, Ballaigues, Switzerland) Prime Dental Products) for 5 minutes. Following this, they were divided into 3 groups (n=10) for: Group I: AH Plus, Group II: Endo Sequence BC Sealer, Group III: MTA Fillapex. Controlled volume of each sealer was placed onto the dentin blocks using a customized wire loop. The contact angle in each case was measured using Dataphysics OCA Easydrop software on a dynamic contact angle analyzer for 1 minute. Readings will be analysed with suitable statistical tests. The contact angle values for AH Plus sealer were significantly lower when compared to the other two sealer groups. The wettability of AH Plus sealer on the root surface dentin was found to be better than Endosequence BC Sealer and Endoseal MTA.

This case report describes a A23-year-old female patient with a congenitally missing maxillary lateral incisor whose missing lateral incisor tooth was rehabilitated using a dental implant which was restored with cemented e-max crown over gold abutment. As the patient is a young female and the implant was in the aesthetic area, placing immediate provisional restoration was the chosen method of restoration. The case reported presented illustrates a therapeutic strategy consisting of implant placement and immediate provisionalization. The treatment sequences were followed as recommended in the dental protocol. First, A maxillary surgical stent was prepared for the correct implant position, a submerged maxillary anterior single-tooth implant placed according to a standard protocol 3.5mmx10mmTC Prima Implant in the area of tooth 12. The implant’s shoulder was placed 2 mm apical to the cemento‐enamel junction of the adjacent teeth. Thereafter immediate temporization was done in two stages. First stage immediately after the implant placement then 3 months after. Lastly, a consistent and suitable follow-up program was applied. Conclusion: When sensibly selected and accomplished, our case report outcome indicates that this technique may provide promising immediate results relative to the aesthetic, maintenance and stability of the peri-implanted tissues as well as patients’ satisfaction, expectation and functionality.