Objectives The aim was to evaluate the peri‐implant tissue levels over a 1‐year period for implants connected to either convex or concave final abutments at the time of implant placement. Materials and Methods In this randomized, double masked, controlled clinical study, twenty‐eight patients with one missing maxillary premolar were allocated to receive one single implant with abutment of either convex (CX Group) or concave (CV Group) emergence shape. A block randomization sequence was used to allocate treatments. Opaque sealed randomization envelopes were used for allocation concealment. All implants received final abutments and interim crowns at implant placement and permanent crowns following 3 months. Clinical and radiographic data were collected at the time of implant placement (IP), final prosthesis delivery (PR), and 12 months following implant placement (FU‐1). Results One patient from the CX Group (n = 13) dropped out from the study and for one patient from CV Group (n = 13), the implant failed to integrate. The mean change in peri‐implant buccal mucosa position (MP) from IP to FU‐1 was −0.76 ± 0.72 mm for CX Group and −0.69 ± 0.89 mm for CV Group (p = 0.8). The amount of bone remodeling above the implant platform from IP to FU‐1 was −0.66 ± 0.46 mm for the CX Group and −0.24 ± 0.25 mm for the CV Group (p = 0.007). Buccal bone thickness was significantly correlated with the amount of buccal MP change from IP to FU‐1 (r = 0.4, p = 0.038). Conclusion The study failed to support the hypothesis that abutment macro‐design has an effect on peri‐implant mucosa margin position changes over time.

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Background: The objectives of the study were to assess knowledge and prescription skills of medications among dental student in Dammam University and evaluate the efficiency of an online application in improving their knowledge.Methods: A cross sectional pre-post study was conducted, a total of 96 students from 4th year to interns were enrolled. A formulated questionnaire was distributed to the students. An application that contained the most common drugs used in dentistry was made by the research team with help of the IT department and then launched. The same questionnaire was distributed again after one month from the time they got the application to evaluate its efficiency.Results: Overall knowledge about medications was poor. Fifth year students reported better knowledge than their colleagues. All students have better knowledge about antibiotics compared to other drugs. Overall knowledge about therapeutic agents improved significantly after the web application (p˂0.001).Conclusions: Students have poor knowledge about medications. Using technology is an effective way to improve prescribing skill among dental students.

Field development of mature fields in Kuwait Oil Company have seen a paradigm shift over the past couple of years, to adopt the latest field proven technology to exploit the remaining reserves. The Mauddad formation in the Bahrah field is a low permeability with high viscosity oil which was previously developed with vertical cased and perforated wells with electrical submersible pumps (ESP). Inflow monitoring also posed a challenge to conduct production logs due to challenges with the Y-tool of the ESP. In light of these challenges, it was decided to drill horizontal wells, installed with multi-stage frac completions with acid being the stimulant. The described solution was considered a recent success because of the 300% increased production compared to offset vertical wells over the same producing period. However, ESPs are still required to lift fluids to surface in these horizontal wells and the understanding of inflow performance of each stage remained a monitoring challenge. A solution was identified to utilise intelligent inflow tracers after the successful pilot in another field development in Kuwait, using passive inflow control devices (ICD) with ESPs. Therefore, it was decided to pilot the same technology which provided intervention free, permanent downhole monitoring. However, the additional challenge was to prove that inflow tracers could survive the harsh acid operation and continue to function as a reliable downhole sensor thereafter. The wells installed with intelligent chemical inflow tracers are used to provide a trend assessment of the clean-up phase of production, productivity assessment information for each stage and to event monitoring such as identifying the location of water breakthrough. Fluid samples collected from the surface flow lines were analyzed for unique chemical tracer signatures and interpreted the corresponding tracer signals. The monitoring campaigns have provided an improved understanding of fracture efficiency which has translated to frac design optimsation and also reduced subsurface uncertainty. This paper discusses the chemical sensor design, integration of the sensors, run in hole procedure, sampling, analysis and interpretations of multi-stage acid frac wells, penetrating the Mauddud reservoir. Several wells were installed with chemical sensors adjacent to the sliding sleeves compartmentalized with swell packers in horizontal producing sections of up to 3,000-ft. The post operation interpretation revealed that chemical sensors functioned after the acid jobs and revealed how each stage performed from the frac clean up operation and how productivity changed over the life of the well.

Objectives The aim was to evaluate peri‐implant tissue levels over a 3‐year period for implants connected to either convex or concave final abutments at the time of implant placement. Materials and Methods In this randomized, double‐masked, controlled clinical study, 28 patients with one missing maxillary premolar were assigned to receive one single implant with a permanent abutment of either convex (CONVEX Group) or concave (CONCAVE Group) emergence shape at the time of implant placement. Clinical and radiographic data were collected at the time of implant placement (IP), final prosthesis delivery (PR), 12 months (FU‐1), and 36 months (FU‐3) following implant placement. Results At the FU‐3 13 patients were available from the CONCAVE Group (n = 13) and eleven from the CONVEX Group (n = 11). The mean change in buccal peri‐implant mucosa position (MP) from IP to FU‐3 was −0.54 ± 0.93 mm for the CONVEX Group and − 0.53 ± 0.87 mm for CONCAVE Group (p = .98). The amount of bone remodeling above the implant platform from IP to FU‐3 was −0.69 ± 0.48 mm for the CONVEX Group and −0.16 ± 0.22 mm for the CONCAVE Group (p = .005). Conclusion The study failed to support the hypothesis that abutment macro‐design has an effect on buccal peri‐implant mucosa margin position over time.