Obesity/overweight and asthma control in LEBANESE adults: a cross-sectional study.

BACKGROUND: Studies exploring the association between weight and asthma are not conclusive. Both obesity and asthma have been increasing in Lebanon, their association is not yet documented. The aim of this study is to explore the effect of weight on asthma control in adults. METHODS: This is a cross-sectional study, involving all consecutive asthma patients presenting to the outpatient allergy clinic at the Hotel-Dieu de France (HDF) University Hospital between January 1, 2014 and December 30, 2016. Patients included were those who consented to fill the Asthma Control Test (ACT) after 3 months of therapy. BMI was reported at the same time of the questionnaire. RESULTS: A total of 183 records of diagnosed asthma cases in adults were included. Sixty-three (34.4%) were males and 120 (65.6%) females, with a mean age of 38.5 (SD = 14.3). Ninety patients (49.2%) were of normal weight, 65 (35.5%) overweight and 28 (15.3%) obese. Seventy-one percent had an ACT score ≤ 19, which corresponds to poor asthma control. Patients who were overweight or obese were more likely to have poor asthma control compared to patients who had a normal weight at the time of evaluation. CONCLUSION: In conclusion, our study showed a significant association between asthma control as assessed by the ACT and high BMI defining overweight or obesity. This is the first national study exploring the association between asthma and overweight/obesity in Lebanon. A larger study with sampling from different specialists' sites is needed to draw more conclusions about this association.

Association between substance use disorders and self- and other-directed aggression: An integrated model approach.

Our study's objective is to determine whether substance use disorders' association with aggression differs according to the type of substance and/or the form of aggression, within the same population. We used data from the National Survey on Drug Use and Health across 2008-2014, with a pooled sample of 270,227 adult respondents. We used regression models to estimate the odds ratios for those having alcohol and/or drug use disorder(s) perpetrating (a) each form of aggression compared with no aggression and (b) other-directed compared with self-directed aggression. Alcohol use disorder alone and drug use disorder(s) alone were both associated with significantly increased odds of committing self-directed, other-directed, and combined aggression. Individuals with drug use disorder(s) alone were more likely to commit other-directed than self-directed aggression (adjusted odds ratio = 1.46, 95% CI = 1.04-2.05). Individuals with alcohol use disorder alone were not likely to commit one over the other (adjusted odds ratio = 1.20, 95% CI = 0.90-1.61). In conclusion, the integrated model of aggression based on the stress-diathesis model is a relevant framework to study risk factors for aggression. Further research is needed to identify longitudinal predictors of directionality of aggression.

Bladder Cancer in Lebanon: Incidence and Comparison to Regional and Western Countries.

Lebanon has one of the highest estimated age-standardized incidence rate (ASR(w)) of bladder cancer (BC) worldwide. The aim of this study is to analyze the incidence rates for BC in Lebanon over a period of 7 years and to compare them to the rates in other countries. Data were obtained from the Lebanese National Cancer Registry for the currently available years 2005 to 2011. The calculated ASR(w) and age-specific rates were expressed as per 100 000 population. From 2005 to 2011, BC has been ranked as the third most common cancer in Lebanon. It accounted for 9.0% of all newly diagnosed cancer cases excluding nonmelanoma skin cancer. It ranked second in males and ninth in females. The average ASR(w) over this period was 31.2 in men and 7.3 in women. These incidence rates are among the highest worldwide across all age groups in both sexes. This study shows that the incidence of BC in Lebanon is high and it is among the highest worldwide. It is important to reduce the risk of BC through tobacco control and by decreasing exposure to avoidable environmental and occupational risk factors.

Factors associated with waterpipe tobacco smoking among Lebanese women.

Waterpipe tobacco smoking (WTS) has become a serious public health threat in the Middle East and beyond. To estimate the prevalence rates of cigarette and WTS among Lebanese women and describe characteristics associated with each behavior. Secondary analysis of women's health data obtained in a national survey in 2010. Of 2,255 selected women, 78 percent reported no or past long-term WTS. Among the 12 percent of regular waterpipe smokers, 40 percent were light users (mean three waterpipe heads weekly), while 60 percent were heavy users (mean of 11 heads per week). About 70 percent were never or past long-term cigarette smokers. Younger age, location within Greater Beirut (GB) and having professional employment were significantly associated with use of WTS. Older age, GB location, lower education, and ever-married were significantly associated with cigarette smoking. WTS is becoming a socially normative behavior among empowered professional women, who can spare the time and expense to engage in this behavior in easily accessible cafés, which prohibit cigarette smoking. Government, media, and NGO campaigns against smoking should target waterpipe use, not only in Lebanon but also across the Arab world and among Arab communities in the Diaspora with messages different from anti-cigarette campaigns.

Aging gracefully in Greater Beirut: are there any gender-based differences?

Background: The implications of rapid aging of the Lebanese population are under-researched. No national studies have so far investigated the living conditions and the health status of urban Lebanese elderly across gender. This was a cross-sectional study involving 905 randomly selected community dwelling elderly aged ≥65 years living in Greater Beirut. Gender differences were assessed among participants who completed a standardized questionnaire on socio-demographic factors, nutritional, health, and functional characteristics. The sample included 533 men (59%) and 372 women (41%). Elderly were regrouped into 'younger elderly' (≤70 years), and 'older elderly' (>70 years) which represented respectively 44.3% and 55.7% of the total population. Women, regardless of their age, were less educated and more likely to live alone. Moreover, poor nutritional status, self-perceived health, absence of physical activity, comorbidity, polymedication and depression were significantly higher among women. 'Older elderly' women became significantly more functionally disabled compared with men of their age. This study evidenced that Lebanese elderly women were disadvantaged regarding their socio-economic, health and functional status. It is requested a nationwide effort to improve the socio-economic status and the health of Lebanese elderly, especially women.

Perception of ageism and self-esteem among Lebanese elders at home and abroad.

BACKGROUND: Discrimination against old age leads to depressive symptoms and lower self-esteem. This issue is not studied in the Lebanese society where a demographic transition is taking place and the population is aging. We assess the perception of age discrimination among Lebanese and its relation to self-esteem. METHODS: We interviewed a convenience sample of 320 Lebanese elders (mean age 69.3 years +/- 6.2; 55% males) living in an urban setting (Beirut) and a rural setting (Ras-Baalbeck) a well as those who immigrated to Dakar using a preestablished questionnaire. Perception of age discrimination and socio-demographic information were collected; self-esteem was measured using the Toulouse scale. Results: More elders living in Beirut (OR = 9.7, 95% CI = 3.5-26.6) and Ras-Baalbeck (OR = 11.42, 95% CI = 3.95-33.1) perceived age-related discrimination than those living in Dakar. This perception was significantly associated to lower self-esteem (OR = 2.2, 95% CI = 1.3-3.6). CONCLUSION: Supporting emotionally vulnerable elders should be a target for policy makers in Lebanon. It is important to preserve a better quality of life for elders still playing a major role in families.

Screening for cardiovascular risk in asymptomatic users of the primary health care network in Lebanon, 2012-2013.

INTRODUCTION: In 2012, the Ministry of Public Health in Lebanon piloted a service of multifactorial cardiovascular screening in the publicly subsidized Primary Health Care (PHC) Network. We present an epidemiological analysis of data produced during this pilot to justify the inclusion of this service in the package of essential services offered through PHC and to present a preliminary cardiovascular risk profile in an asymptomatic population. METHODS: A total of 4,205 participants (two-thirds of which were women) aged at least 40 years and reportedly free from diabetes, hypertension, dyslipidemia, and cardiovascular disease (CVD) were screened. The screening protocol used a questionnaire and direct measurements to assess 5 modifiable cardiovascular risk factors; total cardiovascular risk score was calculated according to a paper-based algorithm developed by the World Health Organization and the International Society of Hypertension. RESULTS: Approximately 25% of the sample displayed metabolic impairments (11% for impaired blood glucose metabolism and 17% for impaired systolic blood pressure), and 6.6% were classified at total cardiovascular risk of 10% or more. Just over one-quarter of the sample was obese, almost half had a substantially elevated waist circumference, and 41% were smokers. Men were significantly more likely to screen positive for metabolic impairment than women, and women were more likely to be obese. CONCLUSION: The implementation of a multifactorial screening for CVD among asymptomatic subjects detected a substantial proportion of previously undiagnosed cases of high metabolic risk, people who could now be referred to optimal medical follow-up.

What matters in the patients' decision to revisit the same primary care physician?

OBJECTIVE: To assess the priority of various aspects of the patient-primary care physician relationship in the decision to visit again that same physician. STUDY SETTINGS: A total of 400 community residents in Ras Beirut, Lebanon. STUDY DESIGN: A cross-sectional community based study sampled by a nonrandom sex-education quota-based procedure. DATA COLLECTION: Participants were asked to fill a survey where they indicated the ranking of nine items by importance in their decision to revisit the same physician. The nine items were chosen from three categories of factors: professional expertise of the physician; characteristics of the patient-physician relationship, office organization. RESULTS: Having a physician that gives the patient adequate time for discussion prevailed as rank 1 and luxurious clinic ranked as 9th. Affordability was one of the main concerns among men, those with poor health and those of lower socioeconomic status. Accessibility of the physician's phone was considered highly important among women and those of lesser education status. CONCLUSIONS: This study emphasizes the importance of adequate time with the patient, accessibility and affordability of the physician in maintaining continuity of care and patient satisfaction, beyond mere medical expertise.

Perceptions and practices regarding herbal medicine prescriptions among physicians in Greater Beirut.

AIMS AND OBJECTIVES: This survey aimed at assessing the perceptions of physicians regarding the appropriateness of prescribing herbal medicines (HM), their prescribing patterns and their knowledge regarding the interaction between HM and conventional drugs. BACKGROUND: No data are currently available in Lebanon concerning the frequency of HM prescription and indications. HM poorly prescribed can affect the overall quality of health among patients taking conventional drugs. METHODS: This descriptive survey study was conducted in the Greater Beirut area in Lebanon during May-June 2009. All Primary Health Care (PHC) physicians in private community-based solo practice were identified from the Lebanese Order of Physicians listing, contacted and invited to participate. Those who agreed had to complete a pre-piloted face-to-face questionnaire. RESULTS: Of two hundred twelve participating physicians, 45% routinely prescribed HM to their patients. Between 64 to 67% prescribers believed that HM have more benefits, faster results and fewer side effects than conventional drugs. In addition, 58% thought that HM were less expensive, and 76% that they were easier to take than conventional drugs. More importantly, in a series of eight questions concerning the physicians' knowledge about the possible mechanism of drug-herb interactions, the general tendency was towards poor knowledge. CONCLUSIONS: A good percentage of PHC physicians who routinely prescribe HM do not know their mechanism of action or their possible interactions with the conventional drugs. Knowledge about mechanism of drug-herb interactions should be an integral part of the medical curriculum. RELEVANCE TO CLINICAL PRACTICE: The knowledge about HM should be an integral part of the medical curriculum as they are frequently prescribed by PHC physicians.

Maternal mortality ratio in Lebanon in 2008: a hospital-based reproductive age mortality study (RAMOS).

INTRODUCTION AND OBJECTIVES: International agencies have recently assigned Lebanon to the group H of countries with "no national data on maternal mortality," and estimated a corresponding maternal mortality ratio (MMR) of 150 per 100,000 live births. The Ministry of Public Health addressed the discrepancy perceived between the reality of the maternal mortality ratio experience in Lebanon and the international report by facilitating a hospital-based reproductive age mortality study, sponsored by the World Health Organization Representative Office in Lebanon, aiming at providing an accurate estimate of a maternal mortality ratio for 2008. The survey allowed a detailed analysis of maternal causes of deaths. METHODS: Reproductive age deaths (15-49 years) were initially identified through hospital records. A trained MD traveled to each hospital to ascertain whether recorded deaths were in fact maternal deaths or not. ICD10 codes were provided by the medical controller for each confirmed maternal deaths. RESULTS: There were 384 RA death cases, of which 13 were confirmed maternal deaths (339%) (numerator). In 2008, there were 84823 live births in Lebanon (denominator). The MMR in Lebanon in 2008 was thus officially estimated at 23/100,000 live births, with an "uncertainty range" from 153 to 30.6. Hemorrhage was the leading cause of death, with double the frequency of all other causes (pregnancy-induced hypertension, eclampsia, infection, and embolism). CONCLUSION: This specific enquiry responded to a punctual need to correct a clearly inadequate report, and it should be relayed by an on-going valid surveillance system. Results indicate that special attention has to be devoted to the management of peri-partum hemorrhage cases. KEYWORDS: Arab, postpartum hemorrhage, development, pregnancy management, verbal autopsy

Awareness and intake of folic acid for the prevention of neural tube defects among Lebanese women of childbearing age.

Since the early 1990s, international recommendations have promoted folic acid supplementation during the periconception period as an effective way of preventing neural tube defects (NTDs). However, the adoption of this recommendation remains insufficient. To assess the awareness and actual intake of folic acid among married Lebanese women aged 18-45 years, a cross-sectional study was conducted among 600 women selected from all five administrative districts in Lebanon, using a multistage cluster sampling procedure. An anonymous questionnaire was completed which covered measures of knowledge and use of folate supplements, as well as demographic, socioeconomic and obstetrical factors. Sixty percent of surveyed women (60%; n = 360) had heard about folic acid. Doctors were the most frequent source of information (61.1%) but only 24.7% of women have been told of the correct period during which folic acid supplementation was useful. Overall, only 6.2% had taken folic acid tablets during the adequate period. Younger age, higher education level and stability/sufficiency of income appeared to be significant predictors of awareness among Lebanese women. Actual folic acid intake was significantly associated with younger age, higher number of pregnancies, planning the last pregnancy and having had that last one after 1990. In Lebanon, the level of folic acid awareness and adequate intake remain relatively low. Several approaches should be used to promote folic acid intake including awareness campaigns, and routine counseling by primary health care physicians on folic acid during preconception visits.

Barriers to breast cancer screening and treatment among women in Emirate of Abu Dhabi.

OBJECTIVES: The objectives of this study were to explore attitudes and beliefs among major national groups of women resident in the Emirate of Abu Dhabi (EAD) in relation to breast cancer screening and treatment. DESIGN: A qualitative study utilizing age and nationality specific focus group discussions and interviews in all parts of EAD. SETTING: Study was conducted among women living in various areas of EAD during April-September 2009. PARTICIPANTS: A total of 329 participants divided into four nationality groups and categorized into two functional groups (well women and regular screeners) were included in this study and participated in 46 focus groups and 30 personal interviews. RESULTS: Some differences in beliefs, perceptions and opinions related to stated causes of breast cancer, preferences regarding breast care services, financial considerations, trust in health services and cultural attitudes towards breast cancer were observed across nationality and age groups. CONCLUSIONS: New information has been obtained that will shape more focused awareness messages, emphasizing on decreasing fear and shame, discouraging use of cauterization and herbal preparations in delaying care, and activating the role of older female peers in favor of breast screening. Ensuring a sufficient number of trained female health care providers and devising creative approaches to ensure preventive health care costs to reimburse non-nationals are structural changes to the health care system which may further improve breast health for all women in EAD.

Use of herbal medications and their perceived effects among adults in the Greater Beirut area.

OBJECTIVES: To measure the magnitude of use of so-called "herbal medications" with or without prescribed drugs and to assess the benefits and adverse effects perceived by herbal users in the Greater Beirut area. METHODS: A sample survey of 480 adults (18-65) in the Greater Beirut (GB) area was conducted over a one-month period in 2009. RESULTS: The estimated weighted prevalence of herbal use in the previous 12 months in GB was 58.9% (56.7-61.2). Most of the 293 users (72.4%) believed that their use had been of no benefit, but 70% thought use was relatively safe. Of users, 53% were concomitantly using conventional drugs for a chronic condition yet only 45% had thought of informing their physician about herbal use. Among the "concomitant users" 60% had suffered some form of adverse effects. CONCLUSIONS: There is a relatively high prevalence of herbal medicine use in Greater Beirut, with an important rate of self-reported adverse effects, especially among those who suffer chronic conditions, and little exchange of information on this between patients and doctors. Data indicate the need to educate patients about realities associated with abusive use, expected benefits and potential drug-herb interaction. Patients on chronic medications should not be left to actually experience adverse effects in order to discover that herbal medicines are not always effective or innocuous.

Psychosocial determinants of intention to seek palliative care among the public in lebanon: A cross-sectional study.

Objectives: This study aimed to assess the psychosocial determinants of intention to seek palliative care for the client themselves, or intention to enroll a family member in palliative care among the public in Lebanon. Methods: A cross-sectional study was initiated in 2020 on a convenience sample of adults permanently living in the Greater Beirut (GB) area; people with no current or previous experience with palliative care either for themselves or for someone dear to them were included. Verbal consent was obtained before data collection, and participants received a questionnaire to be self-completed, statistical analysis was performed using SPSS statistics version 23.0. Results: A total of 875 participants with a mean age of 42 years were interviewed, of whom 24 participants (2.7%) had had a previous experience with PC, either personally or with someone very close to them. The best-fit multivariate predictive model for intention to use PC included older age, positive attitude, and higher perceived control on one's health. The multivariate model for intention to recommend use was significantly associated with a positive attitude, higher perceived control, and lower perceived barriers. Conclusions: Promotional activities should be conducted to provide the Lebanese public with accurate, detailed, and direct information about the benefits of PC, involving essentially physicians. Future research should explore the decision-making process in "real-time" situations, and within our specific psychosocial, cultural, and organizational context.

Epidemics and local governments in struggling nations: COVID-19 in Lebanon.

Municipalities in Lebanon represent local governments at the basic community level. The proximity of the municipality to the local community and its knowledge of available resources, can be crucial in easing the impact of any disaster. This study aimed to document the range of preparedness/reactivity of municipalities as COVID-19 swept through Lebanon. A qualitative case study was implemented to explore municipal response to control the epidemic, using in-depth semi-structured interviews with twenty-seven stakeholders from nine municipalities across all governorates in Lebanon. In each municipality, participants included mayors/deputy mayors, available members of municipal councils, prominent community leaders, health care professionals, and managers of local NGOs. The collected data were analyzed using the comparative thematic analysis. The socioecological model was adopted to illustrate the dynamic interplay between the barriers and facilitators at all ecological levels. The response to the pandemic differed significantly in volume and nature among different municipalities across regions, with rural areas clearly disadvantaged in terms of adequacy and completeness of response. Barriers consistently mentioned by most municipalities included economic collapse and poverty, shortage in resources, lack of support from the central government, stigma, lack of awareness, underreporting, flaws in the MOPH surveillance system, impeded accessibility to healthcare services, limited number and weak role of municipal police, increased mental illnesses, and political patronage, favoritism, and interference. On the other hand, increased donations, community engagement, social support and empathy, sufficient human resources, the effective role of healthcare systems, and good governance were identified as key facilitators. The socioecological model identified several multi-level facilitators and loopholes which can be addressed through a suggested strategic "roadmap" providing evidence-based interventions for future epidemics. It is crucial meanwhile that the central government strengthens the administrative and financial resources of municipalities in preparing and rapidly deploying the expected optimal response.

Cancer registration in the Middle East, North Africa, and Turkey (MENAT) region: A tale of conflict, challenges, and opportunities.

Cancer registration is a core component of national and regional cancer control strategies. In the Middle East, North-Africa and Turkey (MENAT) region, capacity and resources for cancer registration is variable and shaped by multiple contextual challenges. This viewpoint maps out practical recommendations around cancer registration, in an attempt to inform cancer control planning, policy, and implementation. The recommendations laid out in this viewpoint are informed by the discussions held at the Initiative for Cancer Registration in the MENAT (ICRIM) virtual workshop, which convened registry managers, policy makers, and international agencies from 19 countries in the MENAT region. The discussions were distilled in four categories of recommendations, revolving around cancer registration procedures, collaborative governance, putting cancer registration on the map, and capacity building. This viewpoint provides a much-needed mapping of practical recommendations around cancer registration, informed by direct key stakeholders in the region. These practical recommendations offer a road map for policy making, cancer control planning, and future regional capacity strengthening initiatives.

Cancer Registration in the Middle East, North Africa, and Turkey: Scope and Challenges.

PURPOSE: National cancer control strategies have been identified as essential tools for reducing and managing the growing burden of cancer in low- and middle-income countries. Cancer registration is an instrumental component of any cancer control strategy, providing the data to inform effective cancer policy. In the Middle East, North Africa, and Turkey (MENAT) region, cancer registration varies immensely and faces multifaceted challenges including protracted conflict. This study investigates and maps out the present capacities and outputs of cancer registration in the MENAT region and identifies thematic barriers facing implementation and utilization of cancer registry data. MATERIALS AND METHODS: We used a self-administered online survey with open and close-ended questions targeting national and institutional cancer registry managers in the MENAT countries. RESULTS: Registry managers from 19 MENAT countries reported the presence of 97 population-based, 48 hospital-based, and 24 pathology-based registries. Most population-based registries were well- or partially developed. Lack of accurate death records, complete medical records, and communication between stakeholders and deficiencies in trained personnel were critical challenges that were more severe in active conflict zones and neighboring conflict-affected regions. Cancer registration challenges included weak health infrastructure, absence of legislation mandating cancer registration, and disruption of cancer registration because of active conflict and loss of funding. Refugee host countries, such as Lebanon, Turkey, and Jordan, also reported conflict-related challenges including refugee mobility and lack of accurate data on forced migrants. CONCLUSION: This study provides a much-needed understanding of the current landscape and contextual challenges affecting cancer registration in the MENAT. These data are important for identifying areas on which to focus regional capacity-strengthening initiatives.

Prevalence and clinical characteristics of diabetes mellitus in Lebanon: a national survey.

BACKGROUND: Diabetes mellitus in all its forms has been rapidly increasing worldwide, especially in the Eastern Mediterranean Region. AIMS: This national study aimed to assess the prevalence and clinical aspects of diabetes mellitus in Lebanon with special focus on type 1 (T1DM). METHODS: A national multistage, random household sample survey was conducted, using face-to-face interviews with 1 questionnaire per household. A total of 4500 households were selected from all areas based on a pre-existing sampling frame of the Lebanese population. RESULTS: The prevalence of previously diagnosed diabetes mellitus in the surveyed population of 17 832 persons (mean age ~36 years) was 7.95%. The prevalence of T1DM in particular was estimated at 0.1%, or almost 1% of all detected cases of diabetes mellitus. Most persons with diabetes mellitus reported obtaining their usual care from endocrinologists rather than primary healthcare physicians. Delayed performance of haemoglobin A1c test was reported in 25% of 1418 patients. Hypoglycaemic episodes recently occurred in 30% of patients; of whom, at least one third required medical attention, including hospital admission. Diagnosed complications were reported in 22% of cases, with retinopathy being the most common. CONCLUSIONS: Prevalence of T1DM in this population was lower than international estimates. Diabetes mellitus management appears to be deficient, based on delays in standard control testing, hypoglycaemic episodes and diabetes mellitus-related complications. Coordination of diabetic care management should be devolved to primary healthcare physicians, who can keep track of the need for referral to various types of diabetes mellitus care.

Trends in Breast Cancer Staging at Diagnosis Associated with Screening Campaigns in Lebanon.

Introduction: Mammography screening has been shown to improve early breast cancer (BC) detection, by shifting the disease at diagnosis to locally confined stages, offering lighter treatments and better prognoses. BC awareness campaigns calling for annual mammography screenings have been ongoing in Lebanon since 2002. Changes in BC staging at diagnosis as a consequence of documented improvements in mammography uptake remain to be described. Materials and Methods: We reviewed 2,822 BC cases identified by pathology reports in the American University of Beirut Medical Center between the years 1990 and 2015. After age stratification, we have trended the extracted stages versus time. Results were compared between the prescreening (1990-2001) and the postscreening period (2002-2015). Results: During the postscreening period, stage I represented 31%, stage II 47%, stage III 14%, and stage IV 8% of the cases. Stage I cases had more than doubled whereas stage III cases showed a mirror decrease compared with the years before the implementation of awareness campaigns. The increase in stage I was significantly more prominent in women aged 40 years and older (from 14% to 32%), compared with the younger group. Shifts in staging happened in parallel with a concurrent rise in reported uptake of mammography screening. Conclusions: Our findings demonstrate significant trends in earlier detection, which are likely associated with an increase in screening uptake and an awareness of BC as a public health issue. Staging data from hospitals all over Lebanon should be available for building national evidence. The Ministry of Public Health should require reporting of BC stage at diagnosis to the National Cancer Registry, as part of the annual cancer incidence reporting in Lebanon.

Comparison of the fit of Procera crowns made from stone with those made from polyurethane resin.

This study compared the average marginal gap of Procera crowns fabricated from a definitive cast made from polyurethane resin with those made from type IV stone. A metallic maxillary central incisor and first premolar were prepared according to the Procera guidelines and incorporated into a U-shaped definitive cast. From this definitive cast, 20 primary casts were made in polyurethane resin. Two sets of impressions (10 with type IV stone and 10 with polyurethane resin) were made and poured onto these casts. Forty pure aluminum oxide substructures for Procera crowns were made for these groups, with 10 incisors and 10 premolars in each group. Each substructure was cemented on the respective primary die and sectioned. Using an optical microscope and special software, sections were measured and compared for marginal adaptation. Based on the findings, both materials were equally adequate for producing a Procera crown. However, the mean margin gap was consistently larger for type IV stone dies than for polyurethane resin dies.