Artificial intelligence applications in implant dentistry: A systematic review

Statement of problem. Artificial intelligence (AI) applications are growing in dental implant procedures. The current expansion and performance of AI models in implant dentistry applications have not yet been systematically documented and analyzed. Purpose. The purposeof this systematic review was to assess the performance of Ai models in implant dentistry for implant type recognition, implant success prediction by using patient risk factors and ontology criteria, and implant design optimization combining finite element analysis (FEA) calculations and AI models. Material and methods. An electronic systematic review was completed in 5 databases: MEDLINE/ PubMed, EMBASE, World of Science, Cochrane, and Scopus. A manual search was also conducted. Peerreviewed studies that developed AI models for implant type recognition, implant success prediction, and implant design optimization were included. The search strategy included articles published until February 21, 2021. Two investigators independently evaluated the quality of the studies by applying the Joanna Briggs Institute (JBI) Critical Appraisal Checklist for Quasi-Experimental Studies (nonrandomized experimental studies). A third investigator was consulted to resolve lack of consensus. Results. Seventeen articles were included: 7 investigations analyzed AI models for implant type recognition, 7 studies included AI prediction models for implant success forecast, and 3 studies evaluated AI models for optimization of implant designs. The AI models developed to recognize implant type by using periapical and panoramic images obtained an overall accuracy outcome ranging from 93.8% to 98%. The models to predict osteointegration success or implant success by using different input data varied among the studies, ranging from 62.4% to 80.5%. Finally, the studies that developed AI models to optimize implant designs seem to agree on the applicability of AI models to improve the design of dental implants. This improvement includes minimizing the stress at the implant-bone interface by 36.6% compared with the finite element model; optimizing the implant design porosity, length, and diameter to improve the finite element calculations; or accurately determining the elastic modulus of the implant-bone interface. Conclusions. AI models for implant type recognition, implant success prediction, and implant design optimization have demonstrated great potential but are still in development. Additional studies are indispensable to the further development and assessment of the clinical performance of AI models for those implant dentistry applications reviewed

The impact of an employee wellness programme in clothing/textile manufacturing companies: a randomised controlled trial

BACKGROUND: The prevalence of health risk behaviours is growing amongst South African employees. Health risk behaviours have been identified as a major contributor to reduced health related quality of life (HRQoL) and the increased prevalence of non-communicable diseases. Worksite wellness programmes promise to promote behaviour changes amongst employees and to improve their HRQoL. The aim of this study was to evaluate the short-term effects of an employee wellness programme on HRQoL, health behaviour change, body mass index (BMI) and absenteeism amongst clothing and textile manufacturing employees. METHODS: The study used a randomised control trial design. The sample consisted of 80 subjects from three clothing manufacturing companies in Cape Town, South Africa. The experimental group was subjected to a wellness programme based on the principles of cognitive behaviour therapy (CBT) as well as weekly supervised exercise classes over six weeks. The control group received a once-off health promotion talk and various educational pamphlets, with no further intervention. Measurements were recorded at baseline and at six weeks post-intervention. Outcome measures included the EQ-5D, Stanford Exercise Behaviours Scale, body mass index and absenteeism.Data was analysed with the Statistica-8 software program. Non-parametric tests were used to evaluate the differences in the medians between the two groups and to determine the level of significance. The Sign test was used to determine the within group changes. The Mann-Whitney U test was used to determine the difference between the two groups. RESULTS: At six weeks post intervention the experimental group (39 subjects) demonstrated improvement in almost every parameter. In contrast, apart from an overall decrease in time off work and a reduction in BMI for all study participants, there was no significant change noted in the behaviour of the control group (41 subjects). Seventy percent of the experimental group had improved HRQoL EQ-5D VAS scores post intervention, indicating improved perceived HRQoL. In comparison, only 58% of the control group had improved HRQoL EQ-5D VAS scores post intervention. There was no significant difference between the two groups at baseline or at six weeks post intervention. CONCLUSION: An employee wellness programme based on the principles of CBT combined with weekly aerobic exercise class was beneficial in improving the perceived HRQoL and changing health-related behaviours of clothing manufacturing employees. However, it cannot be concluded that the EWP was more effective than the once off health promotion talk as no significant changes were noted between the two groups at 6-weeks post intervention.This trial has been registered with ClinicalTrials.gov (trial registration number NCT01625039)

Membrane reactors using metallic membranes

A very interesting application of metallic membranes is their integration in multifunctional reactors called membrane reactors. This integration allows carrying out reaction and separation in a single device, which results in higher yields and milder conditions compared with conventional reactor systems. These results translate in lower CAPEX (because of reduction of reaction volume and circumventing downstream separations) and reduction of OPEX (because of milder conditions used in the reactor). This chapter introduces the concept of membrane reactors and gives an overview of the latest results achieved in membrane reactor performance and operation

An overview of some recent european projects on metallic membranes

Metallic membranes and membrane reactors have become very popular tools for several process intensification strategies. This is being well recognized at European level, where several projects have been granted in the course of the last three Framework Programs on both membranes as separation tools and especially membrane reactors as process integration tools. This chapter, although not exhaustive (especially because of confidentiality issues), gives a good overview of the recent results of several EU-funded projects. It is worth noting that, apart from these projects, each country has also granted research projects on membrane reactors. These are not discussed in this chapter, although many results have already been reported in other chapters

Continent ileocolonic urinary diversion (Rome pouch) for gynecologic malignancies: Technique and feasibility

To describe the technique, feasibility and early complications of "Rome pouch" urinary diversion. Thirty-five consecutive patients affected by advanced or recurrent gynecological cancers who required anterior or total pelvectomy entered the study. Rome pouch technique starts with the transection of terminal ileum about 12 cm from the ileocecal valve; the large colon is transected 15-20 cm distal to the hepatic flexure. The intestinal wall tension and internal pressure are reduced using 5-8 transverse teniamyotomies of the cecum. The efferent segment of the pouch is created either with the appendix or with the distal ileum. Operative data, intra- and early postoperative complications were recorded. Between February 2000 and March 2006, an ileocolonic urinary diversion (Rome pouch) was carried out in 35 patients affected by advanced or recurrent gynecologic malignancies. The average operative time to complete the anterior and total exenteration including reconstruction procedure was 285 (range, 230-350) and 320 (range 280-415) min, respectively. The average time in performing the Rome pouch technique was 60 min (range, 45-90). Overall postoperative complication rate (major and minor complications) was 82% (29 patients). Febrile morbidity occurred in 26 patients (74%). Wound complications and pelvic collection were found in 7 (20%) and 6 (17%) patients, respectively. Our experience demonstrated that Rome pouch technique represents a valid alternative in gynecology oncology for continent urinary diversion. This technique showed low rate of medical and early urologic complications. The simplicity of performing the procedure and the reduced operating time are the best goals reached by Rome pouch technique. Future comparative trials will better define the role that the Rome pouch will have in these patients