"Gingival margin"

Short dentin etching with universal adhesives: effect on bond strength and gingival margin adaptation. Short dentin etching, a relatively recent technique, aims to improve resin-dentin bonding by preserving hydroxyapatite crystals within the collagen spaces. This study explores short dentin etching's potential in mitigating over-etching issues in deep proximal dentin/cementum margins, an aspect

The impact of retraction cords on the gingival margin level: A randomized clinical trial. To examine the impact of placing plain and impregnated retraction cords for two different retraction times on the postoperative gingival margin level and periodontal health. A total of 40 endodontically treated mandibular first molars were selected and randomly allocated into four groups (n = 10/group scans were superimposed to measure the change in the mid-buccal gingival margin level. Statistical differences between groups at the threetime points were tested using one-way ANOVA and Chi-square tests (α = 0.05). AlCl-impregnated retraction cord for 20 min resulted in a statistically significant change in gingival margin level than limiting its application to 10 min or using plain cords at the three

Effect of soft tissue volume on midfacial gingival margin alterations following immediate implant placement in the esthetic zone: a 1-year randomized clinical and volumetric trial. The current trial evaluated the midfacial gingival margin changes, volumetric, radiographic and clinical alterations 1-year following immediate implant placement with customized healing abutment (IIP + CHA) either solely, or in combination with xenograft (IIP + Bonegraft) or with connective tissue grafting (IIP + CTG) at sites with thin labial bone in the esthetic zone. Thirty-nine non-restorable maxillary teeth indicated for extraction in the esthetic zone were included. Participants were randomly assigned into three equal group; IIP + Bonegraft (Control), IIP + CTG and IIP + CHA. Midfacial gingival margin

Biomechanical effects of clear aligners with different thicknesses and gingival-margin morphology for appliance design optimization. The objectives of this study were to investigate the biomechanical effects of clear aligners (CAs) with various thermoplastic material thicknesses and gingival-margin designs for space closure in extraction treatment and to propose a computer-aided procedure to optimize CA design. The radiologic and intraoral scanning technology, in vitro mechanical experiment, viscoelastic modeling, and finite element analysis (FEA) were integrated to establish an orthodontic simulation model. Twelve FEA models of CA were created, comprising combinations of 2 kinds of thicknesses (0.75 and 0.50 mm), 2 forms of gingival-margin shape (scalloped and straight), and 3 types

Soft tissue phenotype modification predicts gingival margin long-term (10-year) stability: Longitudinal analysis of six randomized clinical trials. To assess the prognostic value of soft tissue phenotype modification following root coverage procedures for predicting the long-term (10-year) behaviour of the gingival margin. Participants from six randomized clinical trials on root coverage procedures at the University of Michigan were re-invited for a longitudinal evaluation. Clinical measurements were obtained by two calibrated examiners. A data-driven approach to model selection with Akaike information criterion (AIC) was carried out via multilevel regression analyses and partial regression plotting for changes in the level of the gingival margin over time and interactions with the early

A novel computer-aided method for direct measurements and visualization of gingival margin changes. To introduce and validate a computer-aided method for direct measurements and visualization of gingival margin (GM) changes. The method consists of five main steps: digital model acquisition, superimposition, computer-aided GM detection, distance calculation between the GM curves

Comparison of three adhesive systems in class II composite restorations in endodontically treated teeth: Influence of Er:YAG laser conditioning and gingival margin levels on microleakage Dental surface conditioning by Er:YAG laser is currently being investigated, as not all of the mechanisms and effects of this technique have been clearly studied. Thus, the aim of the present study was to assess

Gingival Margin Stability Following Esthetic Crown Lengthening Utilizing a Double Periodontal Surgical Guide In patients with excessive gingival display, esthetic crown lengthening procedure by means of scalpel, diode laser or electro-surgery could result in the same gingival marginal stability at 3 and 6 months follow up. Scalpel crown lengthening has been recommended as the gold standard , ease and speed of cutting and reduced postoperative pain. The null hypothesis that the three techniques for aesthetic crown lengthening (ACLP) would show equivalent gingival margin stability at 3 and 6 months follow up.

Gingival Margin Stability After Mucogingival Plastic Surgery. The Effect of Manual Versus Powered Toothbrushing: A Randomized Clinical Trial. Oscillating-rotating power toothbrushes have been proven to be clinically efficacious. To the best of the authors' knowledge, a clinical evaluation of the safety of these toothbrushes after surgical root coverage procedures has not been published. The aim of this study is to evaluate the gingival margin (GM) stability with the use of an oscillating-rotating toothbrush compared with a manual toothbrush. Sixty healthy individuals with at least one Miller Class I or II gingival recession underwent a surgical root coverage procedure. Soft-bristle manual and powered toothbrushes were given to participants randomly assigned to control and test groups, respectively

The relation of gingival thickness to dynamics of gingival margin position pre- and post-surgically. To evaluate the gingival margin position (GMP) before and after open flap debridement in different gingival thickness (GT). Twenty-seven healthy patients with moderate to advanced adult periodontitis were included in a randomized control clinical trial. A calibrated UNC-15 periodontal probe

Cone-Beam Computed Tomography as a Diagnostic Method for Determination of Gingival Thickness and Distance between Gingival Margin and Bone Crest The objective of the present study was to assess cone-beam computed tomography (CBCT) as a diagnostic method for determination of gingival thickness (GT) and distance between gingival margin and vestibular (GMBC-V) and interproximal bone crests (GMBC-I

TLR expression profile of human gingival margin-derived stem progenitor cells Gingival margin-derived stem/progenitor cells (G-MSCs) show remarkable periodontal regenerative potential in vivo. During regeneration, G-MSCs may interact with their inflammatory environment via toll-like-receptors (TLRs). The present study aimed to depict the G-MSCs TLRs expression profile. Cells were isolated from free gingival margins, STRO-1-immunomagnetically sorted and seeded to obtain single colony forming units (CFUs). G-MSCs were characterized for CD14, CD34, CD45, CD73, CD90, CD105, CD146 and STRO-1 expression, and for multilineage differentiation potential. Following G-MSCs' incubation in basic or inflammatory medium (IL-1β, IFN-γ, IFN-α, TNF-α) a TLR expression profile was generated. G-MSCs showed

Effect of different gingival margin restorations of class II cavities on microleakage: an in-vitro study Microleakage is one of the important contributing factors in the failure of resin restorations. The aim of this study was to determine the effect of the location of the gingival margin (enamel, dentin, or cementum) on nanohybrid composite resin on the microleakage of Class II posterior restoration. This was an in vitro study done at Al-Farabi College of Dentistry and Nursing in Jeddah (Saudi Arabia). Eighty-one previously extracted human molars were taken from clinics at Al-Farabi College and divided into three main groups (27 each) according to the location of the gingival margin. Group 1: the location of the gingival margin was in the enamel. Group 2: at the cemento-enamel junction

The Impact of Retraction Cords on the Gingival Margin Level. The purpose of this study is to examine the relationship between placing specific retraction cord for different periods of time and the post-operative gingival margin level in humans. Determining the amount of immediate reversible and delayed irreversible gingival recession (vertical gingival retraction) that might happen after placing the safety of retraction cords when used for multiple teeth preparations and would then be left in the sulcus for an extended amount of time, as well as the potential harm they can do in terms of persistent gingival recession.The purpose of this study is to examine the relationship between placing specific retraction cords for different periods of time and the post-operative gingival margin level in humans

Influence of maxillary canine gingival margin asymmetries on the perception of smile esthetics among orthodontists and laypersons. Our objective was to determine the perception of smile esthetics among orthodontists and laypeople with respect to asymmetries in the maxillary canines' gingival margins in full-face and close-up smile analyses. Full-face and close-up photographs of the frontal smiles of 4 subjects (2 women, 2 men) were used. The images were digitally altered to create a symmetrical image with the gingival margin levels of the maxillary canines matching the central incisors. From this new image, 5 stages of alterations were made in the gingival margin of the right canine in 0.5-mm increments. Final full-face and close-up images of the smiles were assessed by 50 orthodontists

Palatal mucosa derived fibroblasts present an adaptive behavior regarding cytokine secretion when grafted onto the gingival margin. Considering that grafted gingival tissue might have to be adapted to the receptor area and that fibroblasts have the ability to respond to bacterial stimuli through the release of various cytokines, this study investigated whether fibroblasts from the palatal mucosa behave differently when grafted onto the gingival margin regarding cytokine secretion. Biopsies from the palatal mucosa were collected at the time of free gingival graft surgery, and after four months re-collection was performed upon surgery for root coverage. Fibroblasts were isolated by the explant technique, cultured and stimulated with Porphyromonas gingivalis (Pg) and Escherichia coli (Ec) LPS

Influence of fiber inserts, type of composite, and gingival margin location on the microleakage in Class II resin composite restorations. This study evaluated the influence of fiber inserts, type of composites, and location of the gingival seat on microleakage in Class II resin composite restorations. Fifty noncarious human third molars were selected for the study. Standardized Class II box type cavities were prepared on the mesial and distal side of 45 teeth. The gingival margin was placed above the cementoenamel junction (CEJ) on the mesial side and below the CEJ on the distal side. The remaining five teeth received no cavity preparations. The prepared samples were divided randomly on the basis of type of composite and presence or absence of fiber inserts, into four experimental groups of 10

in the upper anterior dentition in young adults, what is the consensus found in the scientific literature regarding the spatial displacement of the gingival zenith and the corono-apical displacement of the lateral incisors gingival margin. in the upper anterior dentition in young adults, what is the consensus found in the scientific literature regarding the spatial displacement of the gingival zenith and the corono-apical displacement of the lateral incisors gingival margin. Print | PDF PROSPERO This information has been provided by the named contact for this review. CRD has accepted this information in good faith and registered the review in PROSPERO. The registrant confirms that the information supplied for this submission is accurate and complete. CRD bears no responsibility or liability

The Effect of Using Two Different Suturing Techniques on Free Gingival Marginal Stability Gummy smile is one of the major esthetic problems nowadays; it is due to several causes that either dental or skeletal. Etiology of the gummy smile is altered passive eruption, vertical maxillary excess, different gingival enlargement conditions, deficient maxillary lip length and excessive maxillary lip of the attached gingival tissues level of gingival margin and marginal tissue contour before and after the surgery.The results of the study showed that tissue relapse was more in the periosteal suturing technique group that was related to the pressure on the tissues due to the fixation of the suture at the periostium, the papillary tissue also showed more inflammation in the follow up period prior to suture

Periodontal regeneration employing gingival margin-derived stem/progenitor cells: an animal study. This study investigated the periodontal regenerative potential of gingival margin-derived multipotent postnatal stem/progenitor cells. Periodontal defects were induced at six sites in eight miniature pigs in the premolar/molar area (-4 weeks). Autologous cells isolated from the gingival margin were on the measured outcomes. Gingival margin-derived stem/progenitor cells show significant periodontal regenerative potential.