<p>Purpose: This study tested the null hypothesis that the bone-to-implant contact (BIC) between endosseous implants with the SLA surface in the canine mandible will not be affected by the application of a light, continuous load during the implant&rsquo;s period of osseointegration. </p><p> Materials and Methods: Thirty Straumann Tissue Level implants were placed in the mandibles of 6 foxhounds. NiTi coil springs were attached to the healing abutments of select implants and provided with a light continuous load. Each canine received two unloaded control implants and three test implants loaded at 2, 4, or 6 weeks post implant placement. Histological analyses of BIC was performed 10 weeks post implant placement. </p><p> Results: There was no statistically significant difference between the test and control implants in regards to Total BIC. </p><p> Conclusion: This studies implies confirmation of the null hypothesis that there is no difference in osseointegration, measured as BIC, between implant groups. </p>

The neuroplastic changes in the motor representations within the face primary motor cortex (Face-M1) due to jaw and tongue motor alterations following the unilateral extraction of maxillary molars teeth have not been explored. The present study used intracortical microstimulation (ICMS) and recordings of evoked electromyographic responses to compare jaw (anterior digastric) and tongue (genioglossus) motor representations within the histologically defined Face-M1 one week post intervention across naive rats (n=6), rats that underwent anesthesia, right maxillary molar extraction after soft tissue manipulation (n=6) and rats that underwent anesthesia and soft tissue manipulation without extraction (n = 7). A small but significant anterior increase in the representation of the jaw and tongue motor representations was observed (oneway ANOVA p < 0.01, Bonferroni p < 0.01) in the contralateral Face-M1 one week following unilateral extraction of maxillary molars in rats.

The neuroplastic changes in the motor representations within the face primary motor cortex (Face-M1) due to jaw and tongue motor alterations following the unilateral extraction of maxillary molars teeth have not been explored. The present study used intracortical microstimulation (ICMS) and recordings of evoked electromyographic responses to compare jaw (anterior digastric) and tongue (genioglossus) motor representations within the histologically defined Face-M1 one week post intervention across naive rats (n=6), rats that underwent anesthesia, right maxillary molar extraction after soft tissue manipulation (n=6) and rats that underwent anesthesia and soft tissue manipulation without extraction (n = 7). A small but significant anterior increase in the representation of the jaw and tongue motor representations was observed (oneway ANOVA p < 0.01, Bonferroni p < 0.01) in the contralateral Face-M1 one week following unilateral extraction of maxillary molars in rats.

<p> Background: Clinicians often use collagen-derived matrices to aid in the regeneration of periodontal tissue during periodontal therapy; other uses of these materials include clot stabilization, wound protection, and patient comfort. The primary objective of this study is to evaluate the effect of absorbable collagen matrices on post-operative healing and pain. Materials: Five patients requiring multiple extractions were enrolled in a split mouth study design. Each subject required extraction of two or more similar sized teeth. The same nerve division with contralateral afferent terminations innervated each pair. We randomly assigned subjects to either a control or experimental group via a coin toss. The experimental groups received collagen sponges while the control groups received extraction only. All patients documented their pain experience in provided journals. In addition, calibrated examiners measured the wound margin closure via photographs of the extraction socket with a University of North Carolina probe as reference for measurement. Each examiner recorded the wound margins at baseline, three, seven, and twenty-one days following the extraction. Statistical analysis of the pain score and closure rates were conducted to determine results. Results: Five female patients were enrolled in the study, four of which were in active orthodontic treatment. Sixteen sites were measured, eight control and eight experimental. The general trend over time was that the collagen group had a higher rate of wound margin closure than the control, however statistical analysis indicated no significant difference (p >.05). In contrast, the average pain as reported on the numerical rating scale (NRS) was higher for the experimental side, although statistical analysis indicated that the difference was not significant (p >.05). Conclusion: The use of collagen sponges in extraction sockets do not increase the rate of wound margin closure. In addition, the use of collagen sponges does not decrease post-operative pain following a tooth extraction.</p>

No description available.

No description available.

This case control study was designed to investigate the contributing factors for the occurrence of temporomandibular disorder (TMD) and its subgroups: myofascial pain (MFP) and disc displacement (DD). 178 patients with TMD were selected from the dental clinics of the Jewish General and Montreal General Hospitals, Montreal, Canada, and 100 concurrent controls selected only at the first clinic, participated in this study. The association with TMD, MFP and DD was evaluated for bruxism, trauma, psychological factors, and sociodemographic status using a logistic regression. Migraine, depression, and clenching were associated with the occurrence of TMD. Among the MFP patients, clenching, clenching-grinding, anxiety, female, depression, and somatization were associated with disease occurrence. / In addition, adjusted analysis among the DD patients showed an association with clenching-grinding, orthodontic treatment, and anxiety. Our results identify possible risk factors that are associated with TMD, MFP, and DD occurrence. Further research needs to be conducted to look at these associations in depth.

Background. An online research network was set up among 11 dentists and 2 researchers in Montreal to test the feasibility of data collection over one year. Objectives. We evaluated the pilot participants' experiences and their perspectives regarding its potential utility. Methods. One-on-one qualitative interviews with 4 researchers, 4 dentists, and 3 policy makers. Interviews were recorded on audiotape and transcribed for coding and interpretation. Results. Although feasibility of data collection was evident in the pilot results; qualitative data revealed the limitations of the pilot, the unmet expectations, and the lack of impact of research findings. In terms of potential utility; the participants expressed interest in research, online communication and continuing education. Qualitative analysis revealed differences in perspectives and shared interests among the participants. Conclusion. An online research network can reduce the gap between research and practice. However, to attract participants, it must consider the needs and expectations of those involved.

Despite implant-supported overdentures' advantages over conventional dentures, edentulous patients often refuse dental implants for reasons that may be related to fear. Objective. The purpose of this study was to uncover and explain the various forms and sources of dental implant-related fear among edentulous patients. Methods. A convenient sample of 8 edentulous/semi-edentulous participants was used. Participants were recruited from a current study at McGill University's Faculty of Dentistry, posting of recruitment flyers, and local homes and community centers for seniors. One-on-one interviews were conducted in Montreal from March 2005 to February 2006, transcribed verbatim, and coded into multiple theme-based sections. Results. Three categories of implant-related fear were identified: (1) fear of dental implant surgery; (2) fear of the recovery period; and (3) miscellaneous fears. As well, four main sources of dental implant-related fear were uncovered: (1) past negative experiences at the dentist; (2) "horror stories" of dental implant surgery; (3) having relatively little knowledge of dental implants; and (4) poor dentist-patient relationship. Discussion. The various forms of dental implant-related fear seem to play a substantial role in influencing a patient's decision to undergo implant surgery.

Objectives: To systematically review the research literature on the relationship between Quality of Life (QoL) and cancer therapy-related oral side-effects in a pediatric population. Methods: A scoping review was conducted using 16 databases (research and grey literature), websites, reference lists, and key journals. Inclusion criteria included studies pertaining to children 0-20 years, in English or French, published from 2000 to 2011. Exclusion criteria included mixed population of adults and children and non-discrete disease categories. Data was independently charted by two reviewers. Results: A total of 1270 articles were identified through the initial search. A rigorous review of abstracts and full text reduced the sample to 82 articles, all of which were categorized through a data extraction process. Data analysis resulted in the following findings: Leukemia studies were predominant. The most common side-effect was mucositis; however, side-effects mostly co-occurred. Twenty-one articles dealt directly with the effect on QoL, citing impacts such as changes in taste, eating, drinking, sleep habits, voice and weight loss. Twenty-five articles examined the long-term effect of treatment on pediatric dentition, showing that resultant caries and malformed teeth can affect eating and speech. Conclusions: Preventive oral care before, during and after cancer therapy can decrease the oral side-effects and improve the QoL of the pediatric patient; however, few studies to date advance recommendations for QoL improvement. This study underscores the need for a dental oncology program in pediatric hospitals. / Objectifs : Examiner systématiquement la littérature en recherche sur les liens entre la Qualité de vie (QV) et les effets secondaires des approches thérapeutiques pour traiter le cancer buccal chez une population pédiatrique. Méthodes: Un survol de la littérature été réalisé en utilisant 16 bases de données (recherche et littérature grise), des sites web, des listes de référence et des revues-clés. Critères d'inclusion : études portant sur une population âgée de 0 à 20 ans, publiées en anglais ou en français entre 2000 et 2011 inclusivement. Critères d'exclusion : études concernant une population mixte d'enfants et d'adultes et études d'enfants ayant plus d'un diagnostique. Les données ont été recueillies indépendamment par deux chercheurs; 1270 articles ont été repérés dans un premier survol. Un examen rigoureux des résumés et textes intégraux permit de réduire l'échantillon à 82 articles, par la suite classés à travers un processus d'extraction des données. Résultats d'analyse: Les études sur la leucémie étaient prédominantes. Le plus commun des effets secondaires était la mucosité, mais la plupart des effets secondaires survenaient en cooccurrence. Vingt-et-un articles traitent directement des effets sur la qualité de vie, citant des impacts tels une modification du sens du goût, des changements dans les habitudes alimentaires (e.g. boire et manger) et dans celles du sommeil, des pertes de poids ainsi qu'une modification de la voix. Vingt-cinq articles examinaient l'effet à long terme des traitements sur la dentition pédiatrique et démontrent que la carie et les malformations dentaires qui en résultent peuvent affecter l'alimentation et la parole. Conclusions : Des soins préventifs oraux avant, pendant et après le traitement pour le cancer peuvent diminuer les effets secondaires oraux et améliorer la qualité de vie. Cette étude souligne la nécessité d'un programme d'oncologie dentaire dans les hôpitaux pédiatriques.