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International Journal of Periodontics & Restorative Dentistry

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https://www.readbyqxmd.com/read/29077775/internal-fit-and-marginal-gap-evaluation-of-zirconia-copings-using-microcomputed-tomography-an-in-vitro-analysis
#1
Aws ArRejaie, Haidar Alalawi, Fahad A Al-Harbi, Reem Abualsaud, Ahmad M Al-Thobity
The purpose of this in vitro study was to measure the marginal and internal fit of single-unit all-ceramic zirconia copings (ZCs) fabricated through three different computer-aided design/computer-assisted manufacture (CAD/CAM) systems using microcomputed tomography (microCT). A total of 10 ZCs were produced for each experimental group. Scanning of the stainless steel (SS) model with its respective copings was conducted with a SkyScan machine. DataViewer software was used to acquire cross-sectional images. Locations of cross-sections for all specimens were standardized to reduce errors...
October 27, 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/29077774/histologic-and-histomorphometric-analysis-at-26-months-of-a-bovine-hydroxyapatite-maxillary-sinus-graft-a-case-report
#2
Hadi Antoun, Joseph Eid
A variety of biomaterials are used when performing sinus augmentation techniques. Bovine hydroxyapatite (BH) has already been demonstrated to present osteoconductive properties. The aim of this article is to provide a histologic and histomorphometric analysis, at 26 months, of a bone specimen extracted from a BH maxillary sinus graft. Histomorphometric results showed 64.4% bone density and 24.4% biomaterial density. Histologic analysis revealed marked bone formation and high osteoconductive properties in the BH particles, with no associated signs of inflammation...
October 27, 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/28854288/use-of-bone-morphogenetic-protein-2-in-molar-extraction-sockets-for-immediate-implant-placement-a-prospective-case-series
#3
Karl J Zeren
This prospective case series enrolled consecutively qualifying patients that required immediate dental implant placement in large, uncontained, fresh molar extraction sites using recombinant human bone morphogentic protein-2/absorbable collagen sponge (rhBMP-2/ACS) combined with mineralized bone allograft. A total of 11 patients with 15 extraction sites missing bony walls were enrolled for treatment in this prospective case series. The clinical and radiographic effectiveness of rhBMP-2/ACS combined with mineralized bone allograft supported healing of immediately placed implants...
August 30, 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/28854287/risk-of-superinfection-in-peri-implantitis-after-systemic-broad-spectrum-antibiotics
#4
Fernando Verdugo
Peri-implant disease has developed over the last few years as a complication that is often difficult to resolve. The disease process is mainly attributed to bacterial infection. Proposed combined therapies use broad-spectrum antibiotics to halt its progression. A major associated risk is the undetected development of superinfections that are difficult to eradicate. A group of healthy individuals with advanced peri-implantitis (PI) were referred for evaluation due to severe, rapidly progressive bone loss. Previous nonsurgical and empiric antibiotic therapy had been rendered...
August 30, 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/28834532/clinical-evidence-of-osseospeed-ev-implants-a-retrospective-study-and-characterization-of-the-newly-introduced-system
#5
Marco Toia, Silvia Galli, Denis Cecchinato, Ann Wennerberg, Ryo Jimbo
This retrospective study sought to compare a new implant (Astra Tech OsseoSpeed EV) with its predecessor (Astra Tech OsseoSpeed TX) by scanning electron microscopy and interferometry. Radiographic data from 19 patients who underwent implant restoration with EV (n = 49) with a median follow-up of 16 months were evaluated for mean bone level (MBL) changes from delivery of the definitive prosthesis. EV and TX did not differ in surface roughness, and both systems had a tight seal at the implant-abutment interface...
August 23, 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/28834531/maxillary-sinus-elevation-surgery-with-chronos-and-autogenous-bone-graft-immunohistochemical-assessment-of-runx2-vegf-trap-and-osteocalcin
#6
Rodrigo Dos Santos Pereira, Fernanda Brasil Boos, Luis Fernado Gorla, Idelmo Rangel Garcia, Roberta Okamoto, Eduardo Hochuli-Vieira
The purpose of this study was to evaluate a composite graft of ChronOS, a beta-tricalcium phosphate (β-TCP), mixed 1:1 with an autogenous bone graft in human maxillary sinus augmentation. A total of 12 maxillary sinuses were grafted with an autogenous bone graft (control group), and 9 maxillary sinuses were grafted with ChronOS mixed 1:1 with an autogenous bone graft (test group). After 6 months, biopsy samples were obtained concurrent to the placement of dental implants and were subjected to histomorphometric and immunohistochemical analyses for Runt-related transcription factor 2 (RUNX2), vascular endothelial growth factor (VEGF), tartrate-resistant acid phosphatase, and osteocalcin...
August 23, 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/29028846/periodontal-indices-and-status-in-34-growing-patients-with-unilateral-cleft-lip-and-palate-a-split-mouth-study
#7
Paweł Plakwicz, Beata Wyrębek, Renata Górska, Dorota Cudziło
Periodontal examination in growing patients with unilateral cleft lip and palate was performed in a split-mouth study design. Higher plaque acumulation and bleeding indices were recorded for teeth on the cleft side. Pocket probing depth (PPD) and clinical attachment level (CAL) values were higher at lateral incisors and canines adjacent to the cleft. Keratinized gingiva and depth of the vestibule were lower adjacent to the cleft. This study shows that growing patients with clefts present differences regarding periodontal parameters between the cleft and the control side...
November 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/29023623/vertical-guided-bone-regeneration-for-a-single-missing-tooth-span-with-titanium-reinforced-d-ptfe-membranes-clinical-considerations-and-observations-of-10-consecutive-cases-with-up-to-36-months-follow-up
#8
Ran Herzberg
Vertical guided bone regeneration (GBR) using titanium-reinforced polytetrafluoroethylene (PTFE) membranes is a well-established technique and is considered technique sensitive. When using PTFE membranes, complications usually arise in the crestal incision or next to the neighboring tooth of the treated span. Most studies available describe either distal free end or multiple missing teeth span situations. Treating a single missing tooth span combines the challenge of two neighboring teeth and a smaller flap, which is more difficult to adapt to the augmented environment...
November 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/29023622/osseous-healing-around-immediate-implants-placed-using-contour-augmentation-a-prospective-case-series
#9
Bradley S DeGroot, Cristina C Villar, Brian L Mealey, Michael P Mills, Thomas J Prihoda, Guy Huynh-Ba
The purpose of this study was to prospectively evaluate the dimensional bone changes around implants placed immediately with buccal contour augmentation. Patients with hopeless maxillary anterior teeth were treated with extraction, immediate implant placement, and simultaneous buccal contour augmentation. Hard tissue measurements were recorded at the time of implant placement and after 3 months of healing. All implants (N = 18) successfully osseointegrated with a mean buccal bone thickness of 2.94 ± 0.21 mm (mean ± SE) at the implant platform...
November 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/29023621/bond-strength-of-self-adhering-materials-effect-of-dentin-desensitizing-treatment-with-a-cpp-acp-paste
#10
Fereshteh Shafiei, Reza Derafshi, Mahtab Memarpour
This study investigated the effect of dentin-desensitizing treatment with a casein phosphopeptide-amorphous calcium phosphate (CPP-ACP) paste on shear bond strength (SBS) of two types of self-adhering (SA) restorative materials: resin-modified glass-ionomer (Fuji II LC, GC) and self-adhering flowable composite resin (Vertise Flow, Kerr). Flat and smear layer-free dentin surfaces from 48 extracted molars were prepared and divided into four groups (n = 12 per group) according to Fuji II LC or Vertise Flow and CPP-ACP pretreatment or not...
November 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/29023620/analysis-of-morphologic-attributes-in-dental-esthetics-a-new-concept
#11
Aarati Nayak, Nami Rajpoot, Ranganath Nayak, Ramakant Nayak
An interdisciplinary approach to esthetics requires a comprehensive treatment plan formulated through evaluation of several restorative and periodontal parameters that influence the esthetic zone. A total of 25 subjects (13 women and 12 men, with an age range of 18 to 23 years) participated in the study. Parameters such as gingival biotype on the labial aspect, crown width to crown length ratio, and interdental papilla proportion, with respect to the maxillary anterior teeth, were determined. An attempt was made to establish a correlation between these components, and a positive correlation was found...
November 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/29023619/the-sinus-membrane-maxillary-lateral-wall-complex-histologic-description-and-clinical-implications-for-maxillary-sinus-floor-elevation
#12
Angel Insua, Alberto Monje, Istvan Urban, Laura G Kruger, Carlos Garaicoa-Pazmiño, James V Sugai, Hom-Lay Wang
Maxillary sinus floor elevation has been documented as a safe and predictable procedure for gaining vertical bone height in the atrophic posterior maxillae. Conversely, there is a lack of basic research on the characteristics of the union between the sinus membrane (SM) and the bone. Clinical implications of an impaired union in healthy or pathologic membranes remain unknown. The objective of this study was to present a comprehensive histologic and morphologic description of the sinus membrane-lateral bone wall complex...
November 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/29023618/reconstruction-of-atrophied-posterior-mandible-with-an-inlay-technique-and-allograft-block-technical-description-and-histologic-case-reports
#13
Vittorio Checchi, Annalisa Mazzoni, Giovanni Zucchelli, Lorenzo Breschi, Pietro Felice
This paper presents a technical description of the inlay technique performed with an allograft block in the reconstruction of a severely atrophic posterior mandible. It includes a histologic case series of five patients treated with the same grafting procedure and rehabilitated with dental implants 2 months after placement of the graft. The histologic analysis showed large amounts of newly formed bone in tight connection with the allograft and large marrow spaces with intense cellular activity and the presence of osteocytes...
November 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/29023617/socket-shield-technique-for-implant-placement-in-the-esthetic-zone-a-case-report
#14
Matthias Petsch, Benedikt Spies, Ralf-Joachim Kohal
Improvements in implant design, placement protocols, and sequences for reconstruction in the anterior region have enabled clinicians to provide their patients with esthetically acceptable results. Yet from a clinical standpoint, the predictable preservation of the peri-implant soft tissue remains challenging and tissue grafting is often necessary to compensate for ridge contour changes in postextraction sites. In animal and clinical studies, the socket shield technique has shown its potential to prevent resorption of buccal tissues...
November 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/29023615/the-lip-tooth-ridge-classification-a-guidepost-for-edentulous-maxillary-arches-diagnosis-risk-assessment-and-implant-treatment-indications
#15
Adrien Pollini, Jack Goldberg, Ricardo Mitrani, Dean Morton
Prosthetic rehabilitation of the edentulous maxilla is known to be challenging and requires meticulous planning. The purpose of this article is to describe a novel classification system, the Lip-Tooth-Ridge (LTR), that offers a guidepost for treatment planning the edentulous maxilla for fixed or removable prostheses. This tool will help clinicians identify the final prosthetic design and will provide a case-specific risk assessment guide regarding two different areas. A high (HER) or low (LER) esthetic risk will be determined based on lip dynamics, as well as a high or low structural risk according to the prosthetic space availability...
November 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/29023614/virtual-simulation-of-periodontal-surgery-including-presurgical-cad-cam-fabrication-of-tooth-colored-removable-splints-on-the-basis-of-cbct-data-a-case-report
#16
Jan-Frederik Güth, Ana Elisa Colle Kauling, Josef Schweiger, Jan Kühnisch, Michael Stimmelmayr
Innovative digital diagnostic, design, and manufacturing technologies combined with high-performance polymers offer new possibilities to facilitate complex interdisciplinary treatment procedures. This article reports on the interaction of different digital technologies, from presurgical digital simulation of periodontal surgery to final prosthodontic rehabilitation, in a case of amelogenesis imperfecta in a 17-year-old girl. The aim was to digitally determine the treatment outcome by three-dimensional simulation of the soft tissue removal and to create computer-aided design/computer-assisted manufacture tooth-colored splints before the clinical treatment...
November 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/29023613/comparative-study-of-rhpdgf-bb-plus-equine-derived-bone-matrix-versus-rhpdgf-bb-plus-%C3%AE-tcp-in-the-treatment-of-periodontal-defects
#17
Ji-Young Lee, Hei-Jin Na, Hyun-Min Kim, Sang-Cheol Lee, Jue-Yeon Lee, Chong-Pyoung Chung, Yang-Jo Seol, Yoon Jeong Park
The purpose of this study was to evaluate the efficacy and safety of equine-derived bone matrix as a carrier for recombinant human platelet-derived growth factor BB (rhPDGF-BB) versus beta-tricalcium phosphate (β-TCP) for the treatment of intraosseous periodontal defects in adult patients. This study was performed on 32 adults with advanced periodontal disease. Eligible subjects were randomized in 1:1 ratio into a test (rhPDGF-BB-coated equine-derived bone matrix) or control group (rhPDGF-BB-coated β-TCP)...
November 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/29023612/a-minimally-invasive-approach-using-a-4-mm-implant-without-extraction-of-impacted-maxillary-canine-four-year-postloading-results
#18
Pietro Felice, Carlo Barausse, Martina Stefanini, Roberto Pistilli, Giovanni Zucchelli
The aim of this case report was to suggest an alternative minimally invasive surgical approach to an impacted maxillary canine using a 4-mm-long implant for a fixed prosthetic rehabilitation, avoiding tooth extraction or surgically forced extrusion and exploiting the 6 mm of coronal bone availability. At 4 years postloading, the implant was healthy and well integrated with stable marginal bone levels. The 4-mm length of the implant reduced operative times, postsurgical morbidity, possible complications, and costs...
November 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/29023611/adjunctive-effect-of-autologous-platelet-rich-fibrin-in-the-treatment-of-intrabony-defects-in-localized-aggressive-periodontitis-patients-a-randomized-controlled-split-mouth-clinical-trial
#19
ManojKumar Thorat, Om N Baghele, Rakhewar P S
The aim of this study was to investigate the clinical and radiologic efficacy of autologous platelet-rich fibrin (PRF) in the treatment of intrabony defects associated with localized aggressive periodontitis (LAP). A total of 30 sites, 2 sites per individual in 15 LAP patients, were treated with modified flap operation (MFO; Kirkland flap) alone or combined with autologous PRF. The study variables included plaque index, sulcus bleeding index, probing depth (PD), clinical attachment level (CAL), and gingival marginal level at baseline and 12 months postoperatively...
November 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/29023610/the-management-of-peri-implant-mucosa-deficiencies-in-esthetic-sites-case-report-of-a-combined-surgical-prosthetic-approach
#20
Karolina Jurczyk, Urs C Belser, Anton Sculean
In cases of single missing teeth, implant rehabilitation is generally the preferred treatment option. However, obtaining pleasing esthetic results in the anterior maxillary region and maintaining or rebuilding peri-implant papillae remain challenging tasks. The loss of papillae may cause not just functional but also phonetic and esthetic problems. There is scarce information on the reliability of surgical approaches concerning the peri-implant papilla. The purpose of this case report is to present a modified prosthetic-surgical technique to enhance the convex facial contour of the peri-implant mucosa and volume and height of papillary tissue in an esthetically highly demanding patient...
November 2017: International Journal of Periodontics & Restorative Dentistry
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