Crown lengthening surgical

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...

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...

OBJECTIVES: This study aims to investigate the load-to-fracture of procedures changing crown-to-root ratio (RCRR ) aimed to restore severely damaged upper central incisors to avoid tooth extraction compared to implant placement. There is no evidence on load capability after apical root resection (AR), orthodontic extrusion (OE), and surgical crown lengthening (SCL) in respect to RCRR , respectively. MATERIAL AND METHODS: Human maxillary central incisors were endodontically treated, decoronated, and divided into 4 groups (n = 48)...

OBJECTIVE: To describe a strategy using digital technologies for improving the diagnosis, treatment planning, and surgical execution of patients with excessive gingival display (EGD) due to altered passive eruption (APE). CLINICAL CONSIDERATIONS: An important component for successful patient's management is to fulfill their esthetic expectations whilst delivering predictable and long-term therapeutic outcomes. To achieve this goal in patients with excessive gingival display due to altered passive eruption, it is essential to perform an accurate diagnosis and to communicate to the patient the expected customized results using digital technologies...

Periodontal inflammation is largely governed by infiltration of myeloid cells, in particular macrophages. Polarization of Mφ within the gingival tissues is a well-controlled axis and has considerable consequences for how Mφ participate in inflammatory and resolution (tissue repair) phases. We hypothesize that periodontal therapy may instigate a pro-resolution environment favoring M2 Mφ polarization and contribute towards resolution of inflammation post-therapy. We aimed to evaluate the markers of macrophage polarization before and after periodontal therapy...

OBJECTIVES: Aim of this study was to assess the influence of restorative treatment timing on the periodontal, patient and operator-reported outcomes following crown lengthening surgery (CLS). MATERIALS AND METHODS: Eighteen study participants requiring CLS were divided into two groups based on prosthetic rehabilitation timing (6 or 14 weeks postoperatively). Clinical parameters were recorded around treated and neighboring teeth before and after surgery, 6 and 14 weeks postoperatively, at prosthesis delivery, and three and six months after...

Surgical crown lengthening is one of the most common surgical procedures in periodontal practice. It is divided into functional and esthetic surgical crown lengthening. In general, surgical crown lengthening is a predictable periodontal surgical procedure. Its most common complication is excessive regression of the dentoalveolar complex coronally. Esthetic surgical crown lengthening can be performed predictably through prior digital planning, minimizing the risk of potential complications such as excessive regression of the dentoalveolar complex coronally...

OBJECTIVE: Deep margin elevation (DME) is a treatment approach to relocate the cervical margin of teeth with subgingival defects to a supragingival position with a direct restoration to facilitate rubber dam isolation, impression taking, and bonding of indirect restorations. This article provides an overview of the current scientific evidence on DME and future directions for research. OVERVIEW: The review included 38 studies on DME, most conducted in vitro. These studies indicate that DME has no detrimental effect on the fracture resistance of restored teeth...

The aim of this study was to compare root trunk measurements taken parallel to the tooth axis (TA) to those taken parallel to the root surface (RS) in order to assess the decision-making implications of each method on crown-lengthening surgery. A total of 672 root trunks were measured via CBCT in two planes: TA and RS. The possibility of performing crown lengthening in each clinical situation based on the distance from the cementoenamel junction (CEJ) to the crestal bone (CB) after ostectomy (CEJ-CB) was judged and compared between groups...

INTRODUCTION: Deep margin elevation (DME) is an emerging technique attempting to minimize the need for surgical procedures (i.e., crown lengthening [CL]), deliver indirect restorations in one clinical session and reduce overall treatment time. The present study evaluated the impact of DME upon periodontal measurements based exclusively on human studies. METHODS: A literature search was performed by two independent reviewers in several databases including PubMed, EMBASE, and Cochrane Central up to March 2022...

OBJECTIVES: The present study aimed to compare the guided dual technique with the conventional technique in esthetic crown lengthening (ECL). MATERIALS AND METHODS: The trial registration number is NCT04922086. Twenty-four participants diagnosed with altered passive eruption (APE) type I subcategory B were selected and allocated into two groups. In the control group (n = 12), the ECL procedure was planned by clinical examination and transgingival probing; in the test group (n = 12), the ECL procedure was carried out using digital planning and a double guide...

Dietschi and Spreafico first proposed deep margin elevation (DME) in 1998 to address the multiple clinical problems associated with sub-gingival margins, where sub-gingival margins will be repositioned coronally using composite resin restorations. Given that dentistry is directing towards conservatism, its use is currently trending. MATERIALS AND METHODS: a search was performed through PubMed, Scopus, and Google Scholar search engines to obtain relevant articles with no time restriction...

Background and Objectives: The report describes a technique using a diagnostic mock-up as a crown-lengthening surgical guide to improve the gingival architecture. Materials and Methods: The patient's primary concern was improving her smile due to her "gummy smile" and short clinical crowns. After clinical evaluation, surgical crown lengthening accompanied by maxillary central full-coverage single-unit prostheses and lateral incisor veneers was recommended. The diagnostic mock-up was placed in the patient's maxillary anterior region and used as a soft tissue reduction guide for the gingivectomy...

OBJECTIVE: To evaluate the type of wound healing following modified crown lengthening surgery in dog model to provide a biological basis for its clinical application. METHODS: Flap surgery, traditional crown lengthening procedure and modified crown lengthening procedure were performed on the right maxillary central incisor, the left maxillary central incisor and the left maxillary first lateral incisor respectively of five male beagle dogs. The right maxillary first lateral incisors with no surgical intervention were used as controls...

This report describes the esthetic and prosthetic oral rehabilitation of a patient with excessive gingival display using a digital guided workflow. As per this digital workflow, the patient's photographs, three-dimensional radiographic images, and a diagnostic digital intraoral scan were obtained. Preoperative digital case planning and designing were followed by the fabrication of surgical guides, printed casts, and matrices to accurately execute surgical esthetic crown lengthening and reproduce the digital design in the subsequent prosthetic rehabilitation...

The management of teeth with deep caries, fracture, or perforation in the cervical third of the root is an integral part of dental practice. Orthodontic extrusion preserves the natural root system and may convert the tooth indicated for extraction into useful tooth with good prognosis and a low risk of failure. Orthodontic tooth eruption can be an alternative to treatment such as surgical crown lengthening, especially in esthetic areas, and provides more favorable conditions for prosthodontic coronal restorations by guaranteeing proper sealing and esthetics and preserving periodontal tissue health...

INTRODUCTION: Prader-Willi syndrome (PWS) is a rare genetic multisystemic disease that is the most common inherited cause of severe childhood obesity. PWS patients are prone to significant oral and systemic health issues that detrimentally affect quality of life and decrease longevity. This report documents full-mouth pre-prosthetic surgical and restorative care in an adult PWS patient. CASE REPORT: The patient, a 29-year-old male, presented to the clinic accompanied by his guardians (parents) with the chief complaint that "My Teeth are breaking down and I would like to get them fixed"...

This study aims to evaluate the success of the morpho-functional restoration of a tooth with subgingival carious lesion using the modified replantation technique, which entails the rotation of the element of 180° on its axis. This study has a follow-up of 16 months. A 68-year-old man comes to rehabilitate the esthetic and the functionality of element 1.2, affected by destructive carious process extended below the gingival margin. At the clinical and radiological examination, the possibility of a conservative approach is excluded due to the total lack of healthy dental tissue to construct the ferula...

Digital guides (also known as stents) have become commonly used in daily dental practice. CBCT, digital impressions, and stereolithographic models are considered extremely helpful to create guides for the planning and resolution of surgical cases. In recent years, in periodontal surgery and in particular for the treatment of altered passive eruption (APE), there has been an increasing use of digitally designed guides to improve esthetic outcomes and achieve more predictable results. Digital custom-made guides can be used to improve safety and precision in crown lengthening procedures in patients with APE who have high esthetic expectations...