This case report describes a successful multidisciplinary approach used to preserve the existing tooth structure supporting both hard and soft tissues. The applied approach improved the smile aesthetics of a young female patient with excessively decayed crowns, asymmetric mesio-distal width, and unequal gingival margins of the maxillary anterior teeth. The combined treatment of aesthetic crown lengthening, frenectomy, and restorative dentistry were conducted using zirconia computer-aided design and computer-aided manufacturing (CAD/CAM) crowns. Clinical findings after a 2-year follow-up period confirmed the stability of the gingival margins and absence of adverse effects, such widening of the periodontal ligaments.

To assess the anxiety level of patients before, during, and after dental visits and injection of local anesthesia, and to compare the dental anxiety level among different age groups. A total of 296 patients who underwent different dental treatments in Namuthajiya and Muneseya campuses were included in this study. The subjects were divided into four age groups: 10–20-year, 21–30, 31–40, and above 41. Six questions were developed to assess the extent of anxiety levels among dental patients. The questions were “dental patient in relation to open mouth completely by the dentists”, “„patients during different treatments from instruments”, “„during and after local anesthesia injections”, “night before the dental appointments”, and “when the dentist is angry with the nurse”. Significant difference was considered at P<0.05. Patients aged 21–30 had the highest frequency, followed patients aged 31–40 at 28%. The frequency of the relaxed level of anxiety was the highest among most of the questions, at 68%, 44%, 43%, and 33% for questions number 4, 3, 1, and 5, respectively, and significant differences were found (P˂0.050). The anxious level of stress had the highest frequency of 30% in the question “During drilling from instruments”, whereas the frequency of the very anxious level of stress was high at 35% for the question related to “When the dentist is angry with the nurse”. No significant differences were found on both questions, with P values of 0.324 and 0.275. The recorded anxiety levels of patients before dental visits were low but were high during dental visits and treatments. Young and old patients showed increased stress levels during dental procedures.

PVS (Polyvinyl siloxane) materials are hydrophobic which may encourage formation of surface voids affecting the surface hardness and accuracy of resultant cast. The wettability of dentine surfaces by impression materials depends on the hydrophilicity and viscosity of the material. Surfactant applied to an impression may reduce the number of voids in resultant cast or die. With the above background the present study was aimed to investigate the changes in the surface hardness of an investment material poured in polyvinylsiloxane moulds following the application of three brands of commercially available topical surfactants. A precisely machined steel cylindrical master model was made 20mm in diameter and 35mm in length for the fabrication of PVS moulds. A precisely machined casting ring former 40 mm in diameter was made and the master model was mounted centrally on a plastic sheet. PVS duplicating material, Ecosil (Dentaurum) was mixed according to the manufacturer’s instructions and poured into the casting ring former to create four moulds. Fifteen specimens were poured into each of the moulds for each model material/ surface treatment combination, yielding a total of 60 specimens for testing. Brinell hardness test was performed using a universal testing machine and the results were compared using one way ANOVA and Post-hoc Tukey’s test. Aurofilm greatly increased the surface hardness of investment material (BHN-90) when compared to the control group while the surfactants Debubblizer and Waxit decreased the surface hardness of investment material when compared to the control group. The surfactant Aurofilm was found compatible with both PVS duplicating material (Dentaurum) and investment material (Bellavest-T). The surfactants Debubblizer and Waxit were found incompatible with investment material.

Ameloblastoma or admantinoma is a benign odontogenic tumor of epithelial origin. It is rare tumour occurring in the jaws which constitutes 1–3% of all cysts and tumours of jaw with locally aggressive behavior & high recurrence rate. The tumor is by far more common in the mandible than in the maxilla. A unilocular or multilocular radiolucency with a honeycomb or soap bubble appearance is the most striking feature. Sometimes ameloblastoma is indistinguishable from a dentigerous cyst. We present a case report of ameloblastoma of right posterior maxilla in a 35 year old male.

The use of irrigants is an important part of endodontic treatment .The aim of this study was to evaluate the current trends and selections in irrigation among Arab dentist. A standardized questionnaire about irrigants used during root canal treatment distributed to Arab active dentist, the questionnaire comprised questions about irrigant selection, irrigant concentration, smear layer removal, and use of adjuncts to irrigation. This study took place in department of restorative dental Sciences, AlFarabi College for Dentistry and Nursing, Riyadh, Saudi Arabia between May and July 2017. In this study sodium hypochlorite was the most used irrigating solution among respondents (97.6%) followed by saline (54.2%) and chlorhexidine gluconate (43.6%). Only 28.4% of respondents used the highest concentration of sodium hypochlorite. Antibacterial capability was the main reason for irrigant selection (64.1%) followed by tissue dissolution (29.6%). It has been concluded in this study that sodium hypochlorite was the most used irrigating solution among Arab dentists and there was common use of saline as irrigant. The majority of Arab dentists routinely aim to remove the smear layer during irrigation of root canals and less than half of Arab dentists used adjuncts to activate the irrigation of root canal system.