Crown lengthening

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OBJECTIVE: To explore the feasibility of the usage of digital guides in combination with low- and high-power lasers for the treatment of excessive gingival display, also known as "gummy smile". CLINICAL CONSIDERATIONS: Excessive gingival display due to altered passive eruption can affect patient's perception of their own esthetics and consequently have an impact on self-confidence. Therefore, the management of this condition should offer a predictable and stable long-lasting solution...

Background and Objectives : This review focuses on reviewing studies from the literature regarding the effects of deep margin elevation on the surrounding periodontium. Materials and Methods : A review of the literature was carried out using the following online databases: Embase, The Cochrane Library, MEDLINE-PubMed and Google Scholar. Our search was limited to articles from 2010 to 2023. The search terms consisted of keywords and MeSH terms, which were 'deep margin elevation', 'coronal margin relocation', 'periodontium' and 'periodontal tissues'...

AIMS: Aim of this retrospective study was to evaluate the incidence of complications and to determine the long-term survival rate of teeth with severely compromised clinical crowns treated with minimally invasive crown lengthening (MICL) and restorative treatment. METHODS: A sample of 112 teeth in 86 patients was treated with MICL and restorative dentistry. Endodontic and orthodontic therapy was applied when needed. Clinical outcomes were assessed at baseline, 1 year and long-term...

OBJECTIVES: The aim of this case series is to present the potential applications of the GingivalStat approach, that is, the use of temporary gingival stabilizers, to favor early gingival margin remodeling and prevent the occurrence of gingival rebound following esthetic clinical crown lengthening. CLINICAL CONSIDERATIONS: Four patients requiring clinical crown lengthening were treated for esthetical and functional reasons. The surgical approach included: (a) gingival margin recontouring; (b) full-thickness flap elevation; (c) osteotomy (to achieve an adequate dimension between the alveolar bone crest and the CEJ) and osteoplasty (to reduce the bone thickness and improve the buccal bone anatomic profile, where indicated); (d) temporary gingival stabilizer placement using a block-out resin or a composite (the GingivalStat approach); and (e) flap repositioning, adaptation, and suture...

For restoration of extensively damaged teeth preprosthetic treatment measures are necessary. Crown lengthening and extrusion affect the prospective crown-root ratio (CRR). The subject of this in vitro study was to compute CRRs for both treatment approaches. 120 human maxillary central extracted incisors were measured. Measurements were calculated for five treatment groups: C (control), E-2 mm (extrusion of 2 mm), E-4 mm (extrusion of 4 mm), CL-2 mm (crown lengthening of 2 mm), and CL-4 mm (crown lengthening of 4 mm)...

Surgical crown lengthening (SCL) is the treatment of choice to ensure healthy tissues when subgingival tooth defects encroach on the biologic width.1 However, restorative techniques employing adhesive dentistry may provide viable alternatives to or complement SCL in select cases without the repercussions of surgical bone removal and open interproximal spaces. One such clinical technique, deep margin elevation (DME), employs a direct restoration to relocate the cervical margin of small subgingival defects of posterior teeth supragingivally...

AIM: To describe a digital workflow utilizing 3D printing technology to guide esthetic crown lengthening and control tooth preparation. CLINICAL CONSIDERATIONS: After the initial intraoral and face scans, an esthetic treatment plan was performed digitally based on the patient's personality and face type using artificial intelligence-based 3D smile design software. A 3D-printed tray relined with silicone over a 3D-printed model was used for the mock-up. A 3D-printed guide was implemented to assist esthetic crown lengthening by incorporating, simultaneously, information about the desired free gingival line and the alveolar bone level...

The presence of subgingival pathology, such as a deep secondary caries lesion, a fracture, an already existing restoration that needs to be replaced or the presence of a resorption defect, can constitute a difficult starting situation for the preservation of a tooth. How to deal with such a situation has been a topic of discussion for years. Surgical crown lengthening is one of the first and classic treatment options that is often chosen in such cases. Crown lengthening is a periodontal surgical technique to obtain extra supra crestal clinical crown length...

Subgingival restorations are problematic due to reduced visibility at the preparation margins, humidity (saliva, crevicular fluid and/or blood), problems with taking impressions (digital or analogue) and problems with the application of a rubber dam. Solutions, such as the use of a surgical microscope, retraction cord and Teflon tape, are available. Since modern dentistry largely relies upon adhesive techniques with hydrophobic materials, these require a clean and dry working area. One solution is to place the preparation margin supragingivally...

OBJECTIVES: Excessive gingival display (EGD), also known as gummy smile, has various causes, including altered passive eruption (APE) and hypermobile upper lip (HUL). This state-of-the art narrative review explores current concepts regarding soft tissue EGD etiologies and the contemporary modalities available for APE or HUL treatment. DATA, SOURCES, STUDY SELECTION: Literature search was conducted for a narrative review on the etiology, diagnosis, and treatment of EGD caused by APE and HUL...

This case report demonstrates the full mouth prosthetic rehabilitation of a patient with generalised compensated tooth wear and oral sub-mucous fibrosis (OSMF). A 50- year-old female with advanced tooth wear and concomitant OSMF presented to the clinic. She was managed in a sequential manner using an occlusal splint, extractions of hopeless teeth, root canal treatment of strategically important teeth, surgical crown lengthening of abutment teeth, and dental implants to replace missing dentition, followed by crown and bridgework to rehabilitate the dentition...

BACKGROUND: Pain after periodontal surgeries is one of the most common complications. Echium amoenum is among the important therapeutic herbs in Iranian traditional medicine. Various studies have shown its pain control properties. This study aimed to evaluate this herb's efficacy in controlling pain after periodontal surgeries. METHODS: In this randomized clinical trial, 50 patients referred to Tabriz Dental School for clinical crown lengthening surgery were divided into two equal groups: control and test...

BACKGROUND: This study aimed to compare the analgesic effects of Ibuprofen and bromelain after periodontal surgery. METHODS: A double-blinded crossover clinical trial was conducted on 22 patients needing two crown lengthening surgeries without bone surgery or with limited bone surgery on two quadrants of the maxilla, with control and test sides. Each quadrant was randomly assigned to bromelain (500 GUD) or ibuprofen (400 mg). Immediately after the surgery and 6 hours after it, the first dose of the drugs was packaged in the same capsules in A and B...

OBJECTIVES: To assess the trueness of digital measurements using direct and indirect scanning approaches compared to the actual clinical measurements. MATERIALS AND METHODS: The crown length, width, and width/length ratio were measured in 36 anterior maxillary teeth using three different methods. The first was clinically using a digital caliper, the second was by scanning the teeth using a digital scanner and the third was by making an impression of the teeth, constructing a stone cast in the lab, and scanning it to obtain digital measurements...

Biological width (BW) is the distance established from the junctional epithelium and connective tissue attachment to the root surface of a tooth. It acts as a natural seal protecting the tooth from infections and diseases. The normal dimension of it is 2.04 mm on average. A periodontal probe is used to determine BW in routine clinical practice. Various methods are available for the determination of BW. A diagnosis of BW violation is asserted when the distance is found to be less than 2 mm at single or multiple locations...

OBJECTIVE: The appearance of the gingival tissue around the teeth is essential in the aesthetics of the anterior maxillary region of the oral cavity. Abnormalities in symmetry and contour can significantly compromise the appearance of the natural or restored dentition, so the outcome is highly relevant to treatment choice. This study evaluated the efficacy of crown lengthening for restoration of maxillary anterior tooth defects. METHODS: A total of 80 patients (87 affected teeth) diagnosed with maxillary anterior tooth loss in Ganzhou People's Hospital between May 2020 and August 2021 were retrospectively enrolled and divided into an experimental group or a reference group according to different treatment methods, with 40 cases in each group...

PURPOSE: To assess the fracture resistance and failure mode of endodontically treated premolars reconstructed by different preparation approaches: cervical margin relocation (CMR) and crown lengthening (CL) with complete ferrule (CLF) and partial ferrule (CLPF) with three different post and core systems. MATERIALS AND METHODS: In this in vitro study, 100 maxillary premolars were assigned to the following 10 groups according to their preparation approach and type of post and core system (n = 10): (I) control (intact teeth), (II) prefabricated fiber post (PFP) and composite core with CMR (PFP-CMR), (III) polyethylene fiber-reinforced composite (PEFRC) with CMR (PEFRC-CMR), (IV) casting post (CP) and core with CMR (CP-CMR), (V) PFP-CLPF, (VI) PEFRC-CLPF, (VII) CP-CLPF, (VIII) PFP-CLF, (IX) PEFRC-CLF, and (X) CP-CLF...

BACKGROUND AND AIM: Herpes simplex viruses (HSV) are one of the most important groups of human pathogenic viruses. The prominent characteristic of this virus is latency and the ability to reactivate. One of the possible factors for reactivation of this virus is dental procedures. The aim of this study was to evaluate the salivary level of Herpes simplex viruses, before and after periodontal (crown lengthening) surgery and its relation with age and sex. MATERIALS AND METHODS: 30 HSV seropositive patients, who needed the crown lengthening surgery and accepted to cooperate in this research, were included as experimental group of this study...

INTRODUCTION: Crown lengthening is one of the most common periodontal surgical procedures carried out to increase the amount of supragingival tooth structure. There is a lot of literature on crown lengthening surgeries, but very few systematic reviews comparing treated and adjacent sites over a six-month period. The purpose of this systematic review and meta -analysis was to evaluate the outcomes of crown lengthening surgery in terms of changes in periodontal clinical parameters and periodontal tissue stability between treated and adjacent sites...