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Three-year post-loading results of a randomised, controlled, split-mouth trial comparing implants with different prosthetic interfaces and design in partially posterior edentulous mandibles.

PURPOSE: To compare the clinical and radiological outcomes of two implant designs with different prosthetic interfaces and neck configurations. MATERIALS AND METHODS: Thirty-four partially edentate patients randomly received at least one NobelActive implant (Nobel Biocare, Göteborg, Sweden) with back-tapered collar, internal conical connection and platform shifting design, and one NobelSpeedy implant (Nobel Biocare) with external hexagon and flat-to-flat implant-abutment interface according to a split-mouth design. Follow-up continued to 3 years post-loading. The primary outcome measures were

Therapeutic decisions in the presence of decayed permanent first molars in young subjects: a descriptive inquiry.

UNLABELLED: The aim of this exhaustive descriptive epidemiological study was to determine the clinical approach to be adopted by practitioners specializing exclusively in pediatric odontology and by orthodontists when confronted with decayed molars in children and adolescents. MATERIAL AND METHOD: A questionnaire was sent out to all corresponding practitioners (n=2076). Six questions related to treatment decisions taken when faced with decayed permanent first molars (unfavorable short or middle-term prognosis) in patients needing, or not, orthodontic care. The Chi(2) test was used to compare

Clinical and radiographic success rates of mineral trioxide aggregate and ferric sulphate pulpotomies performed by dental students.

AIM: The purpose of this study was to evaluate and compare the clinical and radiographic findings of ferric sulphate (FS) and mineral trioxide aggregate (MTA) as vital pulpotomy materials in primary molars. MATERIALS AND METHODS: Participants, including 40 boys and 53 girls ranging between 5 and 10 years of age (mean age 7.7 years), were selected from the patient population at the University of Gazi Department of Paediatric Dentistry. The children were healthy and cooperative, with at least 1 symptom-free restorable and vital primary molar with deep carious lesions. The pulpotomies were perfo

Immediate provisionalization of NanoTite implants in support of single-tooth and unilateral restorations: one-year interim report of a prospective, multicenter study.

BACKGROUND: Clinical studies reporting immediate loading of endosseous implants for edentulous cases and for fixed partial restorations have been well documented with satisfactory survival rates. Implants with a recently developed, nanometer-scale surface topography (NanoTite, BIOMET 3i, Palm Beach Gardens, FL, USA), created by discrete crystalline depositions (DCD) of calcium phosphate nano-crystals onto a dual acid-etched (DAE) surface, show enhanced early fixation in preclinical studies when compared with DAE-surfaced implants. These outcomes suggest DCD-surfaced implants may be advantageou

Long-term evaluation of single crystal sapphire implants as abutments in fixed prosthodontics.

49 patients participated in a prospective study of treatment of total or partial edentulism with fixed prosthodontics supported by Bioceram sapphire implants. 15 patients were treated for maxillary or mandibular edentulism, and 7 for a missing maxillary anterior tooth. The remaining 27 patients, with Applegate-Kennedy Class I-IV residual dentitions, were treated with fixed bridges supported by free-standing implants, or bridges supported by teeth and implants. Implant success, prosthesis stability, radiographic marginal bone level as well as parameters for peri-implant health were evaluated. T

Evaluation of a modified Pulpotec endodontic approach on necrotic primary molars: a one-year follow-up.

AIM: The aim of this study was to evaluate the effectiveness of a Pulpotec modified endodontic approach on primary molars presenting necrotic pulp and furcation bone loss in a cohort of healthy children. MATERIALS AND METHODS: Forty primary necrotic molars in healthy children, aged between 4 and 6 years underwent clinical and radiological assessment. A chemomechanical removal of pulpal necrotic debris was performed with 1% sodium hypochlorite irrigation. The canals were dried and Pulpotec was inserted in the pulp chamber, and the teeth were then restored. Clinical evaluation, vertical and hor

Stress Distribution in Single Dental Implant System: Three-Dimensional Finite Element Analysis Based on an In Vitro Experimental Model.

This study aimed to analyze the stress distribution in single implant system and to evaluate the compatibility of an in vitro model with finite element (FE) model. The in vitro model consisted of Brånemark implant; multiunit set abutment of 5 mm height; metal-ceramic screw-retained crown, and polyurethane simulating the bone. Deformations were recorded in the peri-implant region in the mesial and distal aspects, after an axial 300 N load application at the center of the occlusal aspect of the crown, using strain gauges. This in vitro model was scanned with micro CT to design a three-dimensiona

Predictors of multiple tooth loss among socioculturally diverse elderly subjects.

PURPOSE: This study identifies clinical factors that predict multiple tooth loss in a socioculturally diverse population of older adults. MATERIALS AND METHODS: A total of 193 participants from English-, Chinese-, or Punjabi-speaking communities in Vancouver, British Columbia, with low incomes and irregular use of dental services were followed for 5 years as part of a clinical trial of a 0.12% chlorhexidine mouthrinse. The participants were interviewed and examined clinically, including panoramic radiographs, at baseline and annually for 5 years. Binary logistic regression was used to test th

Clinical considerations for enhancing the success of implant-supported restorations in the aesthetic zone with delayed implant placement.

Several factors (e.g., root configuration, periapical pathoses, periodontal disease, severe bone loss, patient accessibility) determine the timing of the implant placement. When delayed implant placement is the only feasible option for implant restoration, achieving a functional and aesthetic restoration is more complex and challenging. This article will discuss the surgical and prosthetic methods for enhancing the success of an implant-supported crown in the aesthetic zone in cases where delayed implant placement is the only available treatment option for patients missing single teeth.

Open-flap versus flapless esthetic crown lengthening: 12-month clinical outcomes of a randomized controlled clinical trial.

BACKGROUND: Excessive gingival display (EGD) has a negative impact on a pleasant smile. Minimally invasive therapeutic modalities have become the standard treatment in many dentistry fields. Therefore, the aim of this study is to compare the clinical outcomes of open-flap (OF) and minimally invasive flapless (FL) esthetic crown lengthening (ECL) for the treatment of EGD. METHODS: A split-mouth randomized controlled trial was conducted in 28 patients presenting with EGD. Contralateral quadrants received ECL using OF or FL techniques. Clinical parameters were evaluated at baseline and 3, 6, and

Translation and validation of the Hindi version of the Geriatric Oral Health Assessment Index.

PURPOSE: To translate the original English version of the Geriatric Oral Health Assessment Index (GOHAI) into Hindi and assess its validity and reliability for use among people in India. MATERIALS AND METHOD: After translation into Hindi, a total of 385 participants aged 55+ demonstrated acceptable validity and reliability when used for people in India. Individual GOHAI items were recorded and summed as originally recommended. The questionnaire sought information about socio-demographic characteristics and self-reported perception of general and oral health. Clinical examination included asse

A survey of general dental practitioners in the North West of England concerning the dental care of patients following head and neck radiotherapy.

AIMS: The aim of this survey was to investigate the views of general dental practitioners (GDPs) on their perceived roles and the barriers regarding dental care of patients following head and neck radio-therapy. METHODS: From a total of 1163 GDPs on the Mersey Postgraduate Dental Deanery mailing list, 369 were selected at random. Questionnaires were sent out in February 2010 followed by reminders a month later. A study-specific questionnaire was piloted prior to the survey. RESULTS: One hundred and ninety-eight of the potential 336 respondents returned valid questionnaires, a response rate o

Mineral trioxide aggregate vs. formocresol in pulpotomized primary molars: a preliminary report.

PURPOSE: The aim of this study was to compare the effect of mineral trioxide aggregate (MTA) to that of formocresol (FC) as pulp dressing agents in pulpotomized primary molars with carious pulp exposure. METHODS: Forty-five primary molars of 26 children were treated by a conventional pulpotomy technique. The teeth were randomly assigned to the MTA (experimental) or FC (control) group by a toss of a coin. Following removal of the coronal pulp and hemostasis the pulp stumps were covered with an MTA paste in the experimental group. In the control group, FC was placed with a cotton pellet over th

Single molar replacement with a progressive thread design implant system: a retrospective clinical report.

Many clinical studies have shown that replacement of molars with only 1 implant is commonly associated with various functional complications, such as implant fracture and screw loosening. Thus, multiple implants have been recommended to withstand the high occlusal forces present in the molar region. The aim of this retrospective study was to evaluate the clinical response to the use of single implants with a progressive thread design (Ankylos) in the replacement of molar teeth. Fifty-eight implants (10 in the maxilla and 48 in the mandible) were placed in 51 patients. The implants were in situ

Efficiency of Three Interdental Plaque Control Aids (Dental Floss, Water Flosser, and Interdental Brush) as an Adjunct to Toothbrushing in Children.

INTRODUCTION: General well-being of an individual, particularly oral health, depends on the maintenance of optimal oral hygiene. Evidence-based research has established the role of plaque biofilm as an etiologic factor that increases the risk of developing oral diseases such as dental caries and gingival and periodontal diseases. Brushing with either manual or mechanical toothbrushes is most commonly practiced for the removal of plaque, but its efficiency is limited to surfaces it can access, i.e., facial, lingual, and occlusal surfaces of the teeth. During the mixed dentition period, there is

Immediate versus one-stage restoration of small-diameter implants for a single missing maxillary lateral incisor: a 3-year randomized clinical trial.

BACKGROUND: The aim of this study was to compare the bone loss pattern and soft tissue healing of immediately versus one-stage loaded 3.0-mm-diameter implants in cases involving a single missing lateral maxillary incisor. METHODS: Sixty patients with a missing lateral incisor in the maxilla were randomized to one of the treatments: 30 patients in the immediate-restoration group and 30 patients in the one-stage group. All implants were placed in healed sites and had to be inserted with a torque >25 Ncm. The implants in the immediate-restoration group were fitted with a non-occluding temporary

Qualitative effects of dioxin on molars vary among inbred mouse strains.

OBJECTIVE: We evaluated the effects of different levels of the potent environmental toxicant and teratogen, 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD), on molar development in mice in six inbred strains, all with TCDD responsive Ahr alleles. DESIGN: Pregnant females were exposed on gestation day 13 to 4 different levels of TCDD (control, 0.01, 0.1 and 1.0 microg/kg) and their offspring were examined for the frequency of missing third molars (M3s) and for differences in first mandibular molar (M1) cuspal morphology. RESULTS: Missing M3s were prevalent only in mice in two strains, C3H/HeJ and

Assessment of evidence from teeth and the alveolar bone of skulls.

A notable lack of agreement on a standardised criterion for representing changes in alveolar bone persists, which limits its application in forensic dentistry. This study aimed to describe the data on loss of tooth substance and alveolar bone in skulls. Dental and trabecular bone information from 28 skulls from the German Helmer skull collection was collected through dental charting, intraoral photographs taken with a DSLR camera (Nikon D5600, Nikon Corporation, Japan), and small radiographs obtained using a handheld dental X-ray device (Nomad Pro 2, Kavo Kerr, Biberach, Germany). Adobe Photos

Radiolucent lesions of the mandible: a pattern-based approach to diagnosis.

ObjectivesRadiolucent mandibular lesions seen on panoramic radiographs develop from both odontogenic and non-odontogenic structures. They represent a broad spectrum of lesions with a varying degree of malignant potential. The purpose of this review is to illustrate the characteristic imaging findings-as well as the clinical and histological features-of common and uncommon radiolucent lesions of the mandible.MethodsThis review article is based on the retrospective evaluation of 11,725 panoramic radiographs seen in our institution during the past 6 years. It provides a comprehensive, practical a

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… Once fluid accumulates between the enamel organ remnants and the tooth crown, a cyst forms around the crown of the unerupted tooth (typically the lower third molar). … Imaging features of follicular cysts are characteristic and include a unilocular, well-defined radiolucent lesion with sclerotic borders around an unerupted tooth crown (Fig. 3 ). Small follicular cysts may be difficult to differentiate from a normal dental follicle. …

Ten-Year Results of a Prospective Case Series on Immediately Provisionalized One-Piece Alumina-Toughened Zirconia (ATZ) Oral Implants for Single-Tooth Restoration and Three-Unit Fixed Dental Prostheses.

AIMS: The intention of this 10-year prospective case series investigation was to clinically and radiographically investigate the outcomes of a one-piece alumina-toughened zirconia oral implant. MATERIALS AND METHODS: Twenty seven patients received one implant each for single crown restorations (SC), while 13 patients received two implants for a three-unit fixed dental prosthesis (FDP). Eighteen implants were placed in the upper jaw, with four implants in the upper anterior region and nine in the premolar region. The 35 implants of the lower jaw were placed in the premolar (n = 15) or molar re