The International journal of periodontics & restorative dentistry最新文献

This retrospective study aimed to compare extended sinus elevation and extramaxillary surgical protocols for restoring severely atrophic maxillae with zygomatic implants (ZIs) and evaluate their clinical effectiveness. The study included patients who were treated at a dental clinic in Italy from 2012 to 2022 who received fixed screw-retained complete dentures supported by either two or four ZIs. The patients underwent a minimum 1-year follow-up after loading, following two protocols: the hybrid and the quad protocol. Digital planning incorporated CBCT scans, intraoral scans, and digital prosthetic plans within implant-planning software. Surgical techniques involved extended sinus elevation and extramaxillary techniques, using the ZAGA approach for ZI placement. The results showed that out of 19 patients with a mean age of 65.3 years, a total of 56 ZIs and 20 standard implants were used, with no failures observed in either the implants or the definitive prostheses, resulting in a 100% survival rate. According to the ORIS criteria, overall success was achieved in terms of implant stability, sinus health, peri-implant soft tissue condition, and prosthetic function. Only two ZIs (3.6%) exhibited minor gingival recession and moderate thread exposure, which were closely monitored through professional hygiene maintenance. Both the extended sinus elevation and extramaxillary protocols demonstrated comparable clinical outcomes and minimal complications in the restoration of severely atrophic maxillae with ZIs. However, further extensive studies involving larger, multicenter designs and longer follow-up periods are needed to validate and refine these outcomes.

Biocompatibility has been defined by Williams as “the ability of a biomaterial to perform its desired function with respect to a medical therapy, without eliciting any undesirable local or systemic effects in the recipient … and optimizing the clinically relevant performance of that therapy.”1 Monolithic zirconia (MZ) is often described as the most biocompatible ceramic option for indirect dentistry.2 This assertion is typically presented with no attached citations, implying that it is a generally known fact. The purpose of this commentary is to explore the biocompatibility of MZ not only as it relates to localized cellular response, but also within the context of the broader stomatognathic system.

A recent update in periodontal terminology includes a shift from the term biotype, replacing it with the term phenotype. Periodontal phenotype evaluation and diagnosis is possible when findings from the clinical examination to establish the gingival phenotype are combined with assessment of the bone morphotype, commonly using CBCT imaging technology. Such analysis is critical to treatment planning, particularly for interdisciplinary dentofacial therapy (IDT) patients whose treatment often involves clinical interventions such as surgery, orthodontic tooth movement, and/or extensive restorative treatment. This paper highlights how this shift in terminology can also be considered an evolution of thought process, as the phenotype offers a more comprehensive way to guide planning at the foundational level and offers an updated approach for diagnosing and planning treatment for IDT patients. Being able to identify a patient with a seemingly intact periodontal phenotype that will become susceptible or deficient over time without planned intervention is critical. Until now, there has been no established protocol recommended for risk assessment regarding iatrogenic sequelae on the periodontium involving tooth movement. A systematic approach, phenotype-driven treatment planning (PDTP), is introduced here, and an updated outcome of treatment, termed optimized periodontal phenotype, is suggested.

This PRISMA-compliant systematic review aimed to investigate the effect of supportive peri-implant care (SPIC) on peri-implant tissue health and disease recurrence following the nonsurgical and surgical treatment of peri-implant diseases. A literature search was conducted to identify investigations that fulfilled a set of predefined eligibility criteria based on the following PICOS question: What is the effect of SPIC upon peri-implant tissue stability following nonsurgical and surgical interventions for the treatment of peri-implant diseases in adult human subjects? Data on SPIC (protocol, frequency, and compliance), clinical and radiographic outcomes, and other variables of interest were extracted and subsequently categorized and analyzed. A total of 8 studies were included, comprising 288 patients and 512 implants previously diagnosed with peri-implantitis. No studies including peri-implant mucositis fit the eligibility criteria. Clinical and radiographic outcomes were similar, independent of specific SPIC features. Nevertheless, a 3-month recall interval was generally associated with a slightly lower percentage of disease recurrence. The absence of disease recurrence at the final follow-up period (mean: 58.7 ± 25.7 months) ranged between 23.3% and 90.3%. However, when the most favorable definition of disease recurrence reported in the selected studies was used, mean disease recurrence was 28.5% at baseline, considered 1 year after treatment for this investigation, and increased to 47.2% after 2 years of follow-up. Regardless of the SPIC interval and protocol, disease recurrence tends to increase over time after the treatment of peri-implantitis, occasionally requiring additional interventions.

This paper introduces the continuous crossing mattress periosteal suture technique (CMPST), designed to enhance flap adaptation and maintain the established apical displacement of the flap during various periodontal resective surgeries, particularly restorative-driven (or functional) crown lengthening in multiple teeth at anterior or posterior areas. This suture technique securely positions the flap apically, just coronal to the bone, and anchors it at the periosteum, combining the advantages of both continuous and cross-compression sutures without compromising the esthetic results. By eliminating flap mobility, it ensures stable and intimate contact with underlying tissues. Further controlled studies are needed to assess the clinical applicability of this technique compared to other suture techniques.

Esthetic issues and phonetic disturbances frequently occur after periodontal regeneration of the anterior teeth, even if treatment is supposed to be successful. Conventional regenerative techniques predominantly target infrabony defects and often inadequately address the loss of the interdental papilla. This study introduces the papillary coronal anchorage technique, a novel modified tunnel surgical procedure, to facilitate reconstruction of the interdental papilla. This method allows for coronal movement of the entire interdental papilla, without incisions at the papilla, to facilitate primary wound healing. Using a combination of bone grafts and recombinant human fibroblast growth factor-2 and coronally anchoring the tunnel-like flap using sutures, reconstruction of both the infrabony defect and the interdental papilla were achieved. The papillary coronal anchorage technique is effective, as it enables the simultaneous reconstruction of both the infrabony defect and the interdental papilla.

Exosomes, the smallest subset of extracellular vesicles, play a crucial role in cell signaling and communication throughout the body. Their regenerative potential has sparked tremendous interest, with over 5,000 articles on exosomes published yearly, primarily focused on in vitro and preclinical studies. However, to date, no study has investigated their use in humans for dental applications. In this first case report, horizontal ridge augmentation was performed using a novel combination of bone allografts, platelet-rich fibrin, and a specialized subset of exosomes (Periosomes). Implants were placed at 3 months postsurgery, during which a core biopsy sample was taken for histologic analysis. Additionally, CBCT scans were obtained at 1, 2, 3, and 6 months, revealing marked and progressive bone growth. To the authors' knowledge, this study represents the first documented use of exosomes in human alveolar bone regeneration. This case highlights the promising potential of exosomes in regenerative dentistry, opening new avenues for their application in guided bone re-generation procedures.

The concept of the periodontal phenotype has become central to diagnosis, prognosis, treatment planning, and clinical decision-making in contemporary dentistry. At present, the most widely ac-cepted definition of the periodontal phenotype encompasses both the gingival phenotype, which includes the width of keratinized tissue and the thickness of the gingiva, as well as the bone mor-photype, particularly the thickness of the alveolar bone. Although this represents a meaningful ad-vancement over earlier classification methods, a critical element remains overlooked: the supra- crestal tissue height (STH). This dynamic and site-specific dimension extending from the gingival margin to the alveolar crest carries significant clinical implications. Its correlation with other phe-notypic parameters and its relevance across periodontal, restorative, orthodontic, and implant ther-apies justify recognizing the STH as a foundational component of the periodontal phenotype.