Tooth loss during long-term periodontal therapy in specialized practices - a retrospective cohort study from a periodontal practice-based research network (Perio-PBRN).

Objectives: To investigate tooth-specific, clinical tooth-, and patient-related factors associated with tooth loss (TL) in patients with mild to severe periodontitis treated in a periodontal practice-based research network (Perio-PBRN) over at least 5 years.

Materials And Methods: The Perio-PBRN consists of five German periodontal practices where clinical data were collected regarding patient age, tooth type, bleeding on probing (BOP), pocket probing depth (PPD), furcation involvement (FI), number of attended appointments, and other variables of interest. The data were evaluated regarding factors influencing TL.

The seasonal occurrence of periodontitis - a retrospective cohort study from a practice-based research network.

Objective: Many diseases are characterised by their seasonal appearance due to circannual changes in immune defence and a lifestyle that changes over the seasons. However, there is a lack of studies regarding the influence of seasonality on periodontitis. Therefore, the aim of this non-interventional, retrospective, observational study was to investigate the influence of seasonality on periodontitis.

Subgingival air polishing with trehalose powder during supportive periodontal therapy: use of a conical shaped tip during a randomized clinical trial.

Background: This study investigated clinical parameters using a new air-polishing device compared to sonic scaling for subgingival biofilm removal during supportive periodontal therapy. The aim was to evaluate noninferiority of air-polishing compared to sonic scaling in deeper periodontal pockets with respect to pocket depth (PD).

Methods: In 44 participants, 2 single-rooted teeth [(PD) ≥ 5 mm] were treated using a split-mouth design.

Peri-implant bone-level changes in the second decade of loading with regard to the implant-abutment connection: a retrospective study on implants under systematic aftercare.

Background: This retrospective study investigates the change in the peri-implant bone level (PBL) during the 2nd decade of intraoral function in patients complying with a 'supportive implant therapy' (SIT) program. The results were statistically analyzed with respect to the implant abutment connection used.

Methods: In a private practice, only patients with 20-year SIT compliance were identified.

Use of digital periodontal data to compare periodontal treatment outcomes in a practice-based research network (PBRN): a proof of concept.

Background: Scientific studies in dentistry are mainly conducted at universities. However, most patients are treated in dental practices, which differ in many ways from treatment at the university. Through the establishment of practice-based research networks, however, it is also possible to examine studies in a real-world setting in dental practices.

Long-term results of implants and implant-supported prostheses under systematic supportive implant therapy: A retrospective 25-year study.

Background: Long-term data (>10 years) concerning the survival and success rates of implants and implant-supported prostheses are scarce.

Purpose: The present investigation represents one of the first studies on dental implants covering an observational period of 25 years.

Materials And Methods: This study presents the results obtained in 26 patients with 75 implants who participated over a 23- to 28-year period in a supportive implant therapy (SIT) program at a private dental practice.

Supportive Implant Therapy (SIT): A Prospective 10-Year Study of Patient Compliance Rates and Impacting Factors.

The main objective of this study is to present patient compliance rates and influential factors for regular attendance in a systematic implant aftercare program (Supportive Implant Therapy; SIT) within a 10-year observation period. From 2005 to 2008, we identified 233 patients with 524 implants and implant-supported restorations at the study center. They had been instructed to attend an SIT program with 3-month recall intervals.

A new technique for peri-implant recession treatment: Partially epithelialized connective tissue grafts. Description of the technique and preliminary results of a case series.

Background: Data on implant recession coverage (RC) are very scarce.

Purpose: To present a new surgical approach and preliminary results for the treatment of peri-implant soft tissue recession via partially epithelialized connective tissue grafts (PECTGs).

Materials And Methods: We harvested PECTGs from the palate using a double-blade scalpel.

Impact of supportive implant therapy on peri-implant diseases: A retrospective 7-year study.

Aim: Few data are available regarding the long-term impact of supportive implant therapy (SIT) on peri-implant diseases. We present long-term results on the possible effects of SIT on the peri-implant tissues.

Material And Methods: In a private practice, 50 consecutive patients with 101 implants had attended an SIT programme for >6 years (SIT group).

Association of non-surgical periodontal therapy on patients' oral health-related quality of life-A multi-centre cohort study.

Aim: The aim of this multi-centre cohort study was to investigate the association of non-surgical periodontal therapy (NST) on the oral health-related quality of life (OHRQoL) in general and related to severity of periodontal disease and treatment modalities.

Materials And Methods: One hundred and seventy-two patients with periodontal disease from 18 dental practices were measured before and 6-8 weeks after NST using a standardized and validated OHRQoL instrument (Oral Health Impact Profile-G14, OHIP-G14). Another questionnaire was filled out by the dentists to evaluate the influence of treatment modalities and disease severity.

Extraoral Cementation Technique to Minimize Cement-Associated Peri-implant Marginal Bone Loss: Can a Thin Layer of Zinc Oxide Cement Provide Sufficient Retention?

This report describes the use of laboratory-fabricated crown intaglio replicas for extraorally prepared cementation of fixed restorations to implants. This technique minimizes excess cement and may therefore reduce the risk of cement-related marginal peri-implant bone loss. It is unclear whether the remaining thin layer of luting agent provides sufficient retention if low-adhesive zinc oxide (ZnO) cement is used.

Minimizing excess cement in implant-supported fixed restorations using an extraoral replica technique: a prospective 1-year study.

Purpose: Cementation of implant-supported restorations poses two major challenges: (1) minimizing excess cement (reducing the risk of peri-implantitis), and (2) establishing sufficient retention (reducing the risk of decementation). This study presents the first data on a clinical cementation technique that might address both problems.

Materials And Methods: Between 2011 and 2013, 39 patients were provided with 52 implants supporting 52 single crowns (SCs).

Decementation Rates and the Peri-Implant Tissue Status of Implant-Supported Fixed Restorations Retained via Zinc Oxide Cement: A Retrospective 10-23-Year Study.

Background: Long-term data on clinical outcomes of restorations attached to implants via zinc oxide (ZnO) cement have been sparse.

Purpose: The purpose of this study was to retrospectively investigate decementation rates and peri-implant tissue status of implant-supported fixed restorations retained by ZnO cement.

Materials And Methods: Between 1989 and 2003, 63 partially edentulous patients received 93 implants.

A new technique for retaining double crowns on implants via custom-positioned vertical screws.

This report describes the use of custom-positioned vertical screws (CVS) to attach primary telescopic crowns to implant abutments. In a private practice setting, 37 patients with 40 double crown-retained implant overdentures (IODs) with a clearance fit (Marburg double crowns) were followed. All primary crowns on the 120 implant abutments were retained using CVS.

Clinical Outcome of Double Crown-Retained Mandibular Removable Dentures Supported by a Combination of Residual Teeth and Strategic Implants.

Purpose: There is a lack of data regarding the clinical outcome of removable partial dentures (RPDs) supported by a combination of residual natural teeth and implants placed in strategic positions. The aim of the present case series was to conduct a retrospective investigation of the clinical outcome of mandibular tooth-implant-retained partial dentures (TIRPD) rigidly retained via telescopic double crowns.

Material And Methods: Between 1999 and 2010, 18 patients with reduced residual dentition (1 to 3 natural abutment teeth) and in need of an RPD received 1 to 3 implants in strategic positions for support of the removable prostheses.

Supportive post-implant therapy: patient compliance rates and impacting factors: 3-year follow-up.

Aim: To evaluate patient compliance rates and influential factors regarding a systematic SIT program.

Materials And Methods: Between 2005 and 2008, we identified all patients who were provided with implant-supported restorations in the study centre. They had been recommended to attend a SIT program with a 3-month recall.

Increasing the Width of Keratinized Mucosa in Maxillary Implant Areas Using a Split Palatal Bridge Flap: Surgical Technique and 1-Year Follow-Up.

Sufficient soft-tissue coverage of maxillary implant sites may be difficult to achieve, especially after bone augmentation. The use of vestibular flaps moves keratinized mucosa (KM) toward the palate and may be disadvantageous for future peri-implant tissue stability. This study describes a new split palatal bridge flap (SPBF) that achieves tension-free wound closure and increases the KM width in maxillary implant areas.

Unsplinted implants and teeth supporting maxillary removable partial dentures retained by telescopic crowns: a retrospective study with >6 years of follow-up.

Objectives: Data regarding tooth- and implant-supported maxillary removable partial dentures (TIRPDs) are scarce. The objective of this research was to perform a retrospective evaluation of the clinical long-term outcome of maxillary TIRPDs rigidly retained via telescopic crowns in patients undergoing supportive post-implant therapy (SIT).

Material And Methods: The inclusion criteria were met by 26 patients restored with maxillary TIRPDs between 1997 and 2011 in a private practice.

The effect of keratinized mucosa width on peri-implant outcome under supportive postimplant therapy.

Background: Long-ranging data on the influence of keratinized mucosa (KM) on peri-implant tissue status have been scarce.

Purpose: Retrospective evaluation of peri-implant diseases and KM width in patients with versus without mucogingival surgery.

Materials And Methods: Under supportive postimplant therapy (SIT) in a private practice, 68 patients with peri-implant KM widths <1 mm were identified between 1992 and 2011 (eight dropouts).

Double crown-retained maxillary overdentures: 5-year follow-up.

Background: There is a lack of data concerning implant-supported overdentures (IODs) retained by double crowns in the edentulous maxilla.

Purpose: To perform a retrospective evaluation of clinical outcomes (survival/success rates) of maxillary overdentures retained on four implants via double crowns.

Material And Methods: Between 1993 and 2011, 28 patients with edentulous maxillae were restored with overdentures supported by four implants with a Morse taper connection (Ankylos, Dentsply Friadent, Mannheim, Germany) and double crowns according to the Marburg Double Crown (MDC) technique in a private practice.

Long-term results of implant-supported over-dentures retained by double crowns: a practice-based retrospective study after minimally 10 years follow-up.

Background: Different concepts regarding the number of implants and attachment systems for the preparation of implant-supported over-dentures (IODs) have been discussed. Nonetheless, long-term results for double-crown-retained IODs with an observational period of more than 10 years are still rare in the literature.

Objective: The aim of this practice-based study was to retrospectively evaluate the long-term clinical outcome (success/survival rates, technical/biological complications) of IODs retained by double crowns.