A 3-year multicenter study of marginal bone level and soft tissue health of a 1-piece implant.

PURPOSE: The study evaluated 1-piece implants in daily clinical situations. MATERIALS AND METHODS: One-piece implants restoring both single teeth and partially edentulous sites were included. A single-stage procedure was used with immediate provisionalization within 24 hours after surgery. The definitive prosthesis was delivered within 6 months of implant insertion. RESULTS: One hundred fifteen implants have been placed in 84 patients at 4 centers. Two implants failed resulting in a cumulative survival rate of 98.3%. Normal periimplant mucosa and no visible plaque were observed in most of the implants. The soft tissue papilla scores improved considerably over time P < 0.001. Patient assessment improved significantly from implant insertion to the 3-year visit, P < 0.001. The mean bone level at implant insertion, 6-month, and 1-, 2-, and 3-year visits was 0.42, -0.58, -0.69, -0.80, and -0.66 mm, respectively. The mean change in bone level from implant insertion to 6 months and 1, 2, and 3 years was reported as -1.02, -1.12, -1.26, and -1.07 mm, respectively. CONCLUSIONS: The results indicate that this implant has the ability to preserve both hard and soft tissues' architecture.

Trends and attitudes regarding head and neck oncologic surgery: a survey of United States oral and maxillofacial surgery programs.

PURPOSE: The purposes of this study were to: 1) estimate the prevalence and trends of American oral and maxillofacial surgery (OMS) programs in recruiting head and neck oncologic surgery (HNOS) -trained faculty, performing HNOS oncologic procedures and microvascular reconstruction, and presenting HNOS research at academic meetings; 2) estimate whether HNOS and microvascular reconstruction involvement varies among programs with or without a program director or chair trained in HNOS; 3) estimate whether HNOS involvement varies among those OMS programs that regularly attend and do not attend tumor board; 4) estimate whether HNOS involvement varies among those programs that have and have not presented HNOS research at an academic meeting; 5) estimate whether HNOS involvement varies among doctor of medicine-integrated and 4-year OMS programs. MATERIALS AND METHODS: Investigators developed and distributed a survey to all US OMS program directors and/or chair composed of questions regarding faculty prevalence and recruitment, frequency and trends in cases, and the priority of applicants for residency with regard to HNOS. There were 18 close-ended questions, and one open-ended question. Responses were recorded in categorical, Likert, ordinal, and numerical format. Bivariate associations were calculated using Fisher exact test and logistic regression. RESULTS: Sixty-three of 101 surveys were returned (62.3%). Ten program directors or chair completed a fellowship in HNOS (15.9%). Programs with an HNOS-trained program director or chair were more likely to have another HNOS-trained faculty member (P = .01), performed more malignant tumor resections (P < .001), neck dissections (P < .001), and microvascular free-flap reconstructions (P = .02) than programs without program directors or chair trained in HNOS. Programs that regularly attended tumor board performed an increasing number of malignant tumor resections (P = .008); and neck dissections (P = .003) than programs that did not regularly attend their institution's tumor board. Presentations of HNOS-related research at national meetings did not differ between doctor of medicine-integrated and 4-year OMS programs (P = .7). There was no difference in the prevalence of HNOS-trained program directors and chair between doctor of medicine-integrated and 4-year programs (P = .7). CONCLUSIONS: This study's data and comments suggest that programs involved in HNOS have a strong involvement in expanded scope OMS and related academic activities.