Exploring Factors Associated With Accelerometer Validity Among Ethnically Diverse Toddlers.

PURPOSE: Studying physical activity in toddlers using accelerometers is challenging due to noncompliance with wear time (WT) and activity log (AL) instructions. The aims of this study are to examine relationships between WT and AL completion and (1) demographic and socioeconomic variables, (2) parenting style, and (3) whether sedentary time differs by AL completion. METHODS: Secondary analysis was performed using baseline data from a community wellness program randomized controlled trial for parents with toddlers (12-35 mo). Parents had toddlers wear ActiGraph wGT3x accelerometers and completed ALs. Valid days included ≥600-minute WT. Analysis of variance and chi-square analyses were used. RESULTS: The sample (n = 50) comprised racial and ethnically diverse toddlers (mean age = 27 mo, 58% male) and parents (mean age = 31.7 y, 84% female). Twenty-eight families (56%) returned valid accelerometer data with ALs. Participants in relationships were more likely to complete ALs (P < .05). Toddler sedentary time did not differ between those with ALs and those without. CONCLUSIONS: We found varied compliance with WT instructions and AL completion. Returned AL quality was poor, presenting challenges in correctly characterizing low-activity counts to improve internal validity of WT and physical activity measures. Support from marital partners may be important for adherence to study protocols.

Randomized control trial of a childhood obesity prevention family-based program: "Abriendo Caminos" and effects on BMI.

Background: Hispanic individuals are at increased risk for obesity and other chronic health conditions. This article evaluates the effect of a family-based, childhood obesity primary prevention intervention in a community setting. Methods: A multi-site, randomized controlled trial community program with assessments at pre (T0), post-program (T1), and 6-months post-program (T2). Participating families were recruited from five sites. Only families of Mexican or Puerto Rican heritage with a least one child between 6 and 18 years were included in the study, without weight restrictions. Families were randomized to the intervention and control arms. Intervention families received six-2 h weekly workshops. Control families received printed generic nutrition and wellness information. Heights and weights were measured at the 3-time points to calculate BMI z-scores, BMI-percentiles, and weight status using age- and sex-specific growth charts, according to the CDC guidelines. Results: There were no differences in BMI-z scores between children in the intervention (n = 239) and control groups (n = 187) at T0. BMI z-scores decreased in the intervention group (-0.03, 95% CI, -0.066, -0.003, p = 0.032) at T1, but not in the control group at T1. Changes in BMI z-scores were not statistically significant at T2. Conclusion: The Abriendo Caminos intervention effectively prevented unhealthy weight gain in Hispanic children in the short-term, but not at 6-months post-intervention. Younger children and girls benefited more from the program at 6-months post-intervention. Additional efforts are needed to sustain long-term changes. Culturally-tailored programs can provide families with the knowledge to produce short-term changes and a potential pathway for sustainable changes in implementing healthy behaviors.

Lace Up and Mindfulness: A Randomized Controlled Trial Intervention to Reduce Emotional Eating, Anxiety, and Sleep Disturbances in Latinx and Black Youth.

This study assessed the effects of a 12-week afterschool mindfulness-based diet and exercise intervention on mental and physical health in Latinx and Black youth. One hundred forty-eight boys and girls (average age = 10.1 years, SD = 1.3 years; 52% girls; 72.3% Latinx) were randomized to either the experimental group (n = 80) or the control group (n = 68). The experimental group participants engaged in fitness yoga, kickboxing, and/or spinning sessions, and mindfulness practices (e.g., breathing, meditation, and mindful eating) twice per week for 12 weeks. The control group participants engaged in a recreational play session once per week for 12 weeks. All participants completed surveys (demographics, acculturation, anxiety, emotional eating, sleep, and food intake) and had their height, weight, and percent body fat measured pre- and post-intervention. Participants wore an accelerometer for 7 days pre- and post-intervention. Repeated measures analysis of covariance indicated that the experimental group participants reported lower scores in emotional eating, anxiety, and sleep latency post-intervention compared to the control group participants. Conversely, no significant differences were observed in physical activity between the experimental and control group participants post-intervention. These findings indicate that a mindfulness-based intervention has a positive effect on emotional eating, anxiety, and sleep latency among youth of color.

Reducing Obesogenic Eating Behaviors in Hispanic Children through a Family-Based, Culturally-Tailored RCT: Abriendo Caminos.

Family-based interventions that incorporate culturally-tailored multi-component curricula and are grounded on evidence-based information and theoretical frameworks can help reduce the prevalence of obesity among Hispanic children. Abriendo Caminos: Clearing the Path to Hispanic Health is a multi-site culturally-tailored randomized control trial that aims to reduce obesity rates in Hispanic families by delivering education on nutrition, family wellness, and physical activity. This study evaluated the effect of the Abriendo Caminos six-week intervention on dietary behaviors of Hispanic children (6-18 years). Mothers (n = 365) reported their child's eating behavior intake using the U.S. Department of Education's Early Childhood Longitudinal Study protocol (ECLS). Pre/post dietary changes were evaluated using separate generalized estimating equation models adjusted for site, child sex, and child age group. Findings indicate a reduction in the frequency of sugar-sweetened beverages (OR 0.55, 95% CI 0.35, 0.87, p = 0.01), French fries (OR 0.56, 95% CI 0.36, 0.86, p = 0.009), and fast food (OR 0.55, 95% CI 0.36, 0.84, p = 0.006) consumption among children in the intervention arm. Additionally, children in the intervention arm increased their frequency of vegetable consumption (OR 1.84, 95% CI 1.08, 3.12, p = 0.03). The Abriendo Caminos intervention effectively improved four of eight eating behaviors in a short-term intervention.

Perspectives of Black and Hispanic Children Living in Under-Resourced Communities on Meal Preparation and Grocery Shopping Behaviors: Implications for Nutrition Education.

Minority children living in under-resourced communities are at the greatest risk for obesity and poor diet quality. Child involvement in meal preparation may be a helpful strategy to improve diet quality. This paper explores minority children's perspectives regarding this. Eighteen children participated in a mixed methods study (online surveys, telephone interviews). Descriptive statistics were calculated for child demographic and psychosocial factors. Thematic analysis was used to code and analyze the interviews. Most children reported having cooking experience (83%) and cooking with family (94%) and exhibited high cooking self-efficacy (21.8 ± 2.9) and positive cooking attitudes (25.7 ± 4.4). Children reported helping with meal preparation (50%) and grocery shopping (41%) sometimes. The qualitative data further supported the results obtained from the children's psychosocial factors. Most children noted the importance of learning to cook with an emphasis on life skills. Children also shared their level of involvement in cooking and grocery shopping. Most children reported using technology when cooking to find demonstration videos and recipes. These findings highlight that minority children participate in meal preparation and grocery shopping. Their perspectives are important for the development of nutrition education programs to achieve equitable dietary outcomes in minority families living in under-resourced communities.

Hispanic Parents' Views of Family Physical Activity: Results from a Multisite Focus Group Investigation.

Understanding parental views regarding family physical activity is essential to the development of family-focused physical activity interventions. Using a qualitative methodology with thematic analysis and a socio-demographic questionnaire, this study aimed to examine Mexican American and Puerto Rican parental views on child and family physical activity. Sixty-one parents (56 mothers, five fathers) from four sites (California, Illinois, Texas, and Puerto Rico) each participated in a single one-hour focus group session, which included an average of five parents. The findings of this study indicated that parents perceived themselves and their families to be physically active, while some parents believed their children were getting enough physical activity at school and afterschool programs. Walking, bicycling, and playing soccer were the most common physical activities that parents reported engaging in as a family. In addition, some parents shared their preference for exercising without their children. Time constraints along with unsafe neighborhood streets and parks were identified as the major barriers to being physically active as a family. Mothers reported that fathers' involvement in physical activity and combining a healthy diet with exercise were useful strategies for physical activity promotion. This study provides valuable information regarding Hispanic parental views concerning family physical activity relevant to the design of culturally family-based physical activity interventions for this population.

Feasibility and Efficacy of the "FUNPALs Playgroup" Intervention to Improve Toddler Dietary and Activity Behaviors: A Pilot Randomized Controlled Trial.

This study evaluated the feasibility and effects of the Families Understanding Nutrition and Physically Active Lifestyles (FUNPALs) Playgroup on toddler (12-36-month-old) diet and activity behaviors. Parent-toddler dyads were recruited from disadvantaged communities and randomly assigned to receive 10-weekly sessions of the FUNPALs Playgroup (n = 24) or dose-matched health education control group (n = 26). FUNPALs Playgroups involved physical and snack activities, delivery of health information, and positive parenting coaching. The control group involved group health education for parents only. Process outcomes (e.g., retention rate, fidelity) and focus groups determined feasibility and perceived effects. To evaluate preliminary effects, validated measures of toddler diet (food frequency questionnaire and a carotenoid biomarker), physical activity (PA; accelerometers), general and feeding parenting (self-report surveys), and home environment (phone interview) were collected pre and post. The sample comprised parents (84% female) who self-identified as Hispanic/Latino (38%) and/or African American (32%). Retention was high (78%). Parents from both groups enjoyed the program and perceived improvements in their children's health behaviors. Objective measures demonstrated improvement with large effects (η2 = 0.29) in toddler diet (p < 0.001) but not PA (p = 0.099). In conclusion, the FUNPALs Playgroup is feasible and may improve toddler eating behaviors.

Exploring qualities of ethnically diverse parents related to the healthy home environment of toddlers.

Parents serve as role models and household policy makers for their children's home social environment. Also, parents may influence the home physical environment through the provision of resources to support their children's dietary, activity, and sleep behaviors. Understanding the parental characteristics related to children's home environment may allow for tailoring obesity interventions to families' needs. This study aimed to explore parental qualities (general parenting styles, parent feeding practices, and parental BMI) related to healthy home food, physical activity, media and sleep environment of toddlers. A total of 50 multi-ethnic parents with toddler age children who were enrolled in a randomized pilot study of a wellness program completed the Structure and Control in Parent Feeding (SCPF) questionnaire and Comprehensive General Parenting Questionnaire (CGPQ). Parental BMI was calculated using self-reported weight and height data. The Healthy Home Survey, the Home Food Inventory, the Sleep Environment Questionnaire, and items developed for this study were standardized and summed to create home food, physical activity, screen media, and sleep environment scores; high scores reflected healthier environments. To examine the relationships between parental qualities and the home environment, Pearson's correlation test was performed. Parental BMI and overall healthy home environment were inversely associated (r = -0.306; p = 0.032). Structure in general parenting and parental feeding practice were positively correlated with the overall healthy home environment (r = 0.336; p = 0.026) and healthy home food environment (r = 0.415; p = 0.003), respectively. The coercive control general parenting was inversely related to overall healthy home environment score (r = -0.333; p = 0.022). Based on the findings from this study, parents who provide clear communication, set consistent rules, avoid pressure to control their child's behavior, and have lower BMI tend to live in a home environment that support children's health behaviors.

Perspectives of Black/African American and Hispanic Parents and Children Living in Under-Resourced Communities Regarding Factors That Influence Food Choices and Decisions: A Qualitative Investigation.

Families living in under-resourced communities are at risk of obesity and obesity-related chronic diseases. To develop effective interventions, it is important to identify parent and child perspectives of factors that influence food-related choices and decisions. This paper reports qualitative findings from a larger mixed method study investigating this topic. Hybrid thematic analysis was used to code and analyze the interviews. Family-generated photographs of factors influencing food choices were discussed during the interviews. Qualitative findings were organized by the socio-ecological model. Verbatim quotes and photographs were used to support themes. Thirty-six interviews were conducted (18 parents, 18 children). Findings from parents revealed personal (e.g., culture, beliefs, time), family (e.g., mother, child, father, health, finances, cohesiveness), environmental (e.g., availability, convenience, cost), and other (e.g., school food) factors influenced food choices. Similarly, child-reported influences were personal (e.g., preferences, beliefs, taste), family (e.g., mother, family encouragement, father, family time), social (e.g., school, friends), environmental (e.g., availability), and other (e.g., media, sports). The socio-ecological model provided a useful framework for identifying factors that influence food choices and decisions of families living in under-resourced communities. A deeper understanding of these factors could enhance both responsiveness and effectiveness of interventions to enhance diet and reduce obesity risk in families living in under-resourced communities.

Mealtime resistance: Hispanic mothers' perspectives on making healthy eating changes within the family.

Several perceived barriers to healthy eating within the family (e.g., cost, lack of time, energy, accessibility) are documented. However, few studies have assessed Hispanic mothers' perceived barriers and strategies in implementing healthy eating changes in the family's meals. The primary goal of this qualitative study was to investigate Mexican and Puerto Rican mothers' barriers and strategies to creating healthy eating changes within the family at home. A sample of 46 Mexican-American and Puerto Rican mothers in California, Illinois, and Texas participated in this study. An average of 5 mothers participated in a focus group session in Spanish and completed a demographic survey. Focus group thematic analysis revealed that major barriers to implementing healthy eating changes within the family include child and spouse resistance as well as meal preparation time. The resistance mothers reported encountering magnify their meal preparation workload. Mothers shared that they sometimes prepared multiple meals in a single mealtime to please family members. Several strategies to promote healthy eating at home, including serving as role models, providing easy access to healthy food items at home, and not purchasing, or hiding, unhealthy food at home, were also discussed. The current study expands the existing literature by emphasizing the need to empower parents to make healthy changes within their family and the importance of taking fathers and children into account in programming so that the whole family is involved in making healthy changes.

How Minority Parents Could Help Children Develop Healthy Eating Behaviors: Parent and Child Perspectives.

Minority children and children living in under-resourced households are at the greatest risk for obesity and diet-related disparities. Identifying effective strategies to reduce these risks is an important step in child obesity prevention. Parents influence the home environment and play a critical role in child obesity prevention. Eighteen parent-child dyads living in under-resourced Houston area communities participated in a mixed methods study (online surveys, telephone interviews). The purpose of the research reported here was to conduct a secondary analysis of the qualitative data to explore Black/African American and Hispanic parent and child perspectives of the ways in which parents could help their children make healthy food choices. Descriptive statistics were calculated for parent and child demographic characteristics; hybrid thematic analysis was used to code and analyze the interview transcripts. Frequencies were calculated for children's interview responses to rating scales and the grade they gave their eating habits. Mothers' responses were grouped into two broad categories: facilitators (modeling, availability, and teaching) as ways parents could help their child eat healthy, and barriers (lack of time, cost of healthy foods, and lack of knowledge) to helping their child eat healthy. Alternatively, child responses focused on ways in which parents could provide support: environmental support (home availability, home cooking, and introducing new foods) and personal support (providing child choice, teaching, and encouragement). Most children reported that eating healthy was easy, and most rated their personal eating habits as an A or B. These findings suggest that understanding the perspectives of Black/African American and Hispanic parent-child dyads can provide insight into the development of culturally and economically relevant healthy eating strategies and interventions for families living in under-resourced communities.

The Evolving Family Mealtime: Findings From Focus Group Interviews With Hispanic Mothers.

BACKGROUND: Given the protective effects of shared family mealtimes and the importance of family in the Hispanic culture, this context should be explored further to determine how it can be leveraged and optimized for interventions. OBJECTIVE: This study aimed to explore contextual factors associated with family mealtimes in Mexican and Puerto Rican families. METHODS: A total of 63 mothers participated in 13 focus group interviews across 4 states. Thematic analysis was used to analyze transcripts. RESULTS: Seven overarching themes were identified through the thematic analysis. Themes reflected who was present at the mealtime, what occurs during mealtime, the presence of television, the influence of technology during mealtime, and how mealtimes have changed since the mothers were children. CONCLUSIONS: Hispanic mothers may be adapting family mealtimes to fit their current situations and needs, keeping the television and other devices on during mealtimes, and making additional meals for multiple family members to appease everyone's tastes. All of these are areas that can be incorporated into existing culturally tailored obesity prevention programs to help families lead healthier lives.

Culinary Education Programs for Children in Low-Income Households: A Scoping Review.

Child obesity in the United States is at an all-time high, particularly among underserved populations. Home-cooked meals are associated with lower rates of obesity. Helping children develop culinary skills has been associated with improved nutrition. The purpose of this study is to report results from a scoping review of culinary education interventions with children from low-income families. Three databases and hand searches of relevant articles were examined. Retained articles met inclusionary criteria. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines were followed, as appropriate. A data extraction template was developed. Data were independently extracted and verified. Only nine out of 370 articles met the inclusionary criteria and were included in the review. Most interventions were school-based, used a quasi-experimental design, and recruited minority children. Children-only was the primary intervention focus. Primary outcomes were mostly psychosocial from child self-report. Most interventions focused on children only and were guided by Social Cognitive Theory. Most reported stakeholder involvement; however, type and degree varied. All had an in-person component; only one used technology. Few reported training program leaders. Culinary education programs for children from low-income families could benefit from a broader theoretical grounding, program leader training, and greater parental involvement.

A comparison of implant complications and failures between the maxilla and the mandible.

STATEMENT OF PROBLEM: Identifying factors that affect the clinical outcomes of implant therapy is important. PURPOSE: The purpose of this retrospective study was to determine whether implant location was a factor affecting the complication and failure rates of single-tooth implant-supported restorations in a predoctoral setting. MATERIAL AND METHODS: The charts of 431 patients treated with a surgically placed dental implant and restored with a single crown in the predoctoral clinic were analyzed. Data on implant location, type of complication (surgical or prosthetic), and type of failure were collected and analyzed according to implant location using the Fisher Exact Test and Mantel-Haenszel Exact Chi Square Test analysis (α=.05). RESULTS: The charts revealed 158 complications (68 surgical and 90 prosthetic) in 110 patients, and 3.9% of the implants failed. No statistically significant difference was found between the number of surgical complications or prosthetic complications in the maxilla and the mandible (P=.469). CONCLUSIONS: Jaw location (maxilla compared with mandible) of the implant had no statistically significant impact on the incidence of surgically or prosthetically related complications. No statistically significant difference was found in overall implant failures, surgical failures, and prosthetic failures between maxillary and mandibular implants.

The moderating effects of acculturation on the relation of parenting strategies to unhealthy weight control behaviors in Hispanic daughters.

There is a dearth of research regarding the association of child and parent traits to the use of unhealthy weight control behaviors among minority girls with obesity. This study examined the moderating effects of mothers' and daughters' acculturation in the relation of parenting strategies (setting limits, monitoring and discipline) to unhealthy weight control behaviors in Hispanic girls with obesity. Participants included 148 Hispanic mother-daughter dyads (Mage = 39.1, SD = 6.4 years; Mage = 11.3, SD = 1.5 years, respectively). Two-thirds of the mothers were born in Mexico and 46% of them reported low levels of acculturation. In contrast, almost all daughters (90%) were born in the United States and reported high levels of acculturation. Participants were recruited through school nurses and social agencies community coordinators. Mothers and daughters completed surveys on demographic, acculturation, unhealthy weight control behaviors (daughters only) and parenting strategies (mothers only), and had their height, weight, and adiposity assessed. Results from a hierarchical regression analysis revealed that daughters' acculturation, but not mothers' acculturation, moderated the relation of parenting limit setting to daughters' reported engagement in unhealthy weight control behaviors (ß = 1.12, p = 0.007). That is, mothers who used more limit setting were less likely to have daughters engaging in unhealthy weight control behavior and this association was stronger among low acculturated girls than among their highly acculturated counterparts. Future research should assess cultural influences and parenting practices in a sample of Hispanic mothers and their adolescent daughters of varied weight statuses and acculturation levels.

Perceived Stress in Black and Latino Male Firefighters: Associations with Risk and Protective Factors.

Objective: To compare the prevalence of work-related protective and risk factors among Black and Latino male firefighters and to examine the association of these factors to perceived stress among both ethnic groups. Design Setting Participants: Participants included 1,036 male, career firefighters who self-identified as Black (n=477) or Latino (n=559) from a large fire department in a major metropolitan city in the southwestern United States. As part of a department-wide suicide prevention program conducted in 2008, participants completed an anonymous and voluntary mental health needs survey. Measures: The needs survey included questions regarding prevalence of work-related protective and risk factors, the RAPS-4 to assess substance abuse problems, and the 10-item Perceived Stress Scale. Results: Results of regression analyses indicated that for both Black and Latino male firefighters, alcohol abuse (ß =.13, ß =.22), self-reported good health (ß = -.23, ß =-.24) and a positive partner/spouse relationship (ß =-.14, ß = -.15) were related to perceived stress. In addition, having a second job (ß = .12) and a sense of life calling (ß =-.10) were related to perceived stress only among Latino firefighters. All associations were in the expected direction as indicated by the signs of the standardized beta coefficients (ß). Conclusion: Black and Latino male firefighters reported relatively high levels of perceived stress. However, there were both differences and similarities in the factors associated to perceived stress among the ethnic groups. Therefore, interventions to help firefighters reduce or manage stress need to take into account that factors associated with perceived stress may vary by ethnic group.

The Center for Epidemiological Studies Depression Scale (CES-D): Measurement equivalence across gender groups in Hispanic college students.

BACKGROUND: This study examined among Hispanic college students the factor structure and gender measurement invariance of the Center for Epidemiologic Studies Depression (CES-D) scale. The CES-D's original 20 item four-factor model was compared to a recently proposed 14 item, three-factor model. METHODS: Participants included 858 Hispanic undergraduates at an ethnically diverse, major research, urban, public university in the Southwest United States (U.S.). Multigroup confirmatory factor analyses (CFAs) and structural equation modeling were used to examine the factor structure, gender invariance, and construct validity of the CES-D scores. RESULTS: Multigroup CFAs provided support for full configural and metric invariance and partial scalar invariance for the three-factor model across gender groups. Two of the 14 items (#3 and #18) demonstrated different thresholds; women scored higher than men in both items. The pattern of latent correlations of the three depression factors to four stress variables (college academic, social, financial and discrimination stress) demonstrated configural, metric and scalar invariance across gender groups. LIMITATIONS: About two thirds of the participants were women and most were of Mexican descent and had been born in the U.S. Therefore, findings may not generalize to more gender balanced samples and students from other Latin American countries or immigration generational status. CONCLUSIONS: Partial scalar invariance in two items may not have a strong impact in the calculation of the overall depression score. Given evidence for functional invariance, results provide support for the use of the14-item, three-factor CES-D scale to assess depression symptoms among Hispanic college students.

Hispanic maternal influences on daughters' unhealthy weight control behaviors: The role of maternal acculturation, adiposity, and body image disturbances.

This study examined whether maternal adiposity, acculturation, and perceived-ideal body size discrepancy for daughters were associated with daughters' engagement in unhealthy weight control behaviors. A total of 97 Hispanic mother-daughter dyads completed surveys, rated a figure scale, and had their height, weight, and adiposity assessed. Mothers (Mage=39.00, SD=6.20 years) selected larger ideal body sizes for their daughters (Mage=11.12, SD=1.53 years) than their daughters selected for themselves. Mothers had a smaller difference between their perception of their daughters' body size and ideal body size compared to the difference between their daughters' selection of their perceived and ideal body size. More acculturated mothers and those mothers with larger waist-to-hip ratios were more likely to have daughters who engaged in unhealthy weight control behaviors. These findings highlight the relevant role that maternal acculturation and adiposity may have in influencing daughters' unhealthy weight control behaviors.

An exploratory factor analysis of the Parenting strategies for Eating and physical Activity Scale (PEAS) for use in Hispanic mothers of adolescent and preadolescent daughters with overweight.

Existing measures of feeding and physical activity parenting strategies have not been validated for use among Hispanic mothers of adolescent and preadolescent daughters with overweight. The purpose of this study was to investigate the factor structure of the Parenting strategies for Eating and Activity Scale (PEAS) among 134 Hispanic mothers (Mage=38.81, SD±6.34) of adolescent and preadolescent daughters with overweight. Results from this exploratory study revealed that a three-factor structure (Limit Setting, Monitoring, and Discipline) and a 13-item revised PEAS measure might be better suited for use with this population. The revised Limit Setting, Monitoring, Discipline, and total subscales had good reliability (α=0.89, α=0.88, α=0.90, and α=0.87, respectively) and the subscale inter-item correlations were strong. To assess the concurrent validity, the revised PEAS subscales were correlated with both subscales of the Behavioral Strategies to Reduce Fat and Increase Fiber (Parent Report) in a subset of the sample (n=78). The Monitoring and Discipline subscales were found to be correlated with the Behavioral Strategies to Reduce Fat (r=.36 and r=.27, p<.05, respectively) and Increase Fiber (r=.40 and r=.35, p<.01, respectively) subscales. However, the revised PEAS Limit Setting subscale was not correlated with either Reduce Fat or Increase Fiber strategy. Taken together, these results indicated some degree of concurrent validity. Results from this study should be cross-validated using confirmatory factor analysis approaches.

Comparison of implant and provisional placement protocols in sinus-augmented bone: a preliminary report.

PURPOSE: To evaluate preliminary data on clinical outcomes associated with timing of placement of single implant-supported provisional crowns and implants in augmented bone. MATERIALS AND METHODS: Twenty patients underwent sinus elevation bone grafting followed by a 6-month healing period before implant placement and immediate placement of a provisional crown (group [G] 1); 20 patients received sinus elevation bone grafting at the time of implant placement and immediate placement of a provisional crown (G2); 20 patients required no bone augmentation before implant placement and immediate placement of a provisional crown (G3); and 20 patients received sinus elevation bone grafting followed by a 6-month healing period before implant placement followed by a 6-month healing period before restoration (G4). The height of the crestal bone was measured and recorded to determine mean bone changes, and success rates were determined. RESULTS: Mean bone level comparisons were made between G2 and G3, G2 and G4, and G3 and G4. No statistically significant differences were found between the groups (P < .05). G1 was discontinued based on the initial results: two implants did not meet the 35-Ncm insertion test, and one implant failed within 1 month after implant placement. The 1-year implant survival rates were 86% (n = 12/14), 95% (n = 19/20), and 100% (n = 16/16) for G2, G3, and G4, respectively. Differences in survival rates between the groups were not statistically significant (P < .05). CONCLUSION: Implant survival is affected by the timing of sinus augmentation and implant placement in relation to the timing of crown placement. Implants that were restored immediately regardless of the timing of bone augmentation showed greater failure rates than implants in augmented bone with delayed restoration protocols or those that were restored immediately in sites without bone augmentation. Neither the timing of loading nor timing of implant placement in relation to bone augmentation surgery affected mean bone loss.