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Stomatologija 2017; 19 (2): 44-50 398 KB

The comparison of cement- and screw-retained crowns from technical and biological points of view

Aira Ragauskaitė*, Gediminas Žekonis*, Juozas Žilinskas*, Alvydas Gleiznys*, Eglė Ivanauskienė*, Darius Gleiznys

Summary

Objective. The aim of this review was to evaluate the most common complications in implant prosthodontics with porcelain-fused-to-metal crowns, to evaluate the influence of biomechanical properties on fractures and cracks of veneered porcelain, and to compare the effects of crowns with different connections on soft tissues.
Material and Methods. A search of literature in the English language between 2009 and 2015 was conducted using the following databases: Medline via PubMed, Science Direct, Wiley online library, Taylor& Francis, and Cochrane library. In total, 10 studies that met the inclusion criteria were found.
Results. Four investigations showed that technical complications more often occurred in screw-retained prostheses, although two studies concluded that cement-retained crowns were also susceptible to technical complications. Two investigations showed that the deeper the abutment margin was subgingivally, the more excess cement was left in the peri-implant sulcus. Four studies concluded that cement-retained prostheses were more susceptible to biological complications, but two investigations also showed that biological complications were observed in tissues adjacent to screw-retained crowns.
Conclusions. The research of literature data for the last five years showed that screw-retained crowns demonstrated more failures such as porcelain cracks and fractures or screw loosening, while cement-retained crowns caused more severe biological complications such as peri-implant soft tissue inflammation or pathological bone resorption.

Key words: cement-retained restorations, screw-retained restorations, implant-supported prosthesis, peri-implant soft tissue health, biological and technical complications of implant restorations.

Received: 19 03 2015

Accepted for publishing: 28 06 2017

*Clinical Department of Dental and Maxillofacial Orthopedics, Faculty of Odontology, Medical Academy, Lithuanian University of Health Sciences

Address correspondence to Aira Ragauskaitė, Clinic of Prosthodontics, Lithuanian University of Health Sciences, Sukileliu pr. 51, LT-50106 Kaunas, Lithuania.

E-mail address: airaragauskaite@gmail.com



	Baltic Dental and Maxillofacial Journal

June, 2017, Vol. 19, No. 2 CONTENTS SCIENTIFIC ARTICLES Orthodontic-surgical treatment: electromyographic and kinesiographic evaluation in follow up period. Experimental study Lucia Giannini, Cinzia Maspero, Guido Galbiati, Laima Kairyte, Federica Zanoni, Giampietro Farronato 35-43 REVIEW The comparison of cement- and screw-retained crowns from technical and biological points of view Aira Ragauskaitė, Gediminas Žekonis, Juozas Žilinskas, Alvydas Gleiznys, Eglė Ivanauskienė, Darius Gleiznys 44-50 CASE REPORT Large oral ulcer of tongue related to dental trauma Gian Paolo Bombeccari, Gianpaolo Guzzi, Francesco Pallotti, Massimo Porrini, Aldo Bruno Giannì, Francesco Spadari 51-54 SCIENTIFIC ARTICLES The efficacy of short (6 mm) dental implants with a novel thread design Soheil Bechara, Tatjana Nimčenko, Ričardas Kubilius 55-63 CASE REPORT Bone augmentation and simultaneous soft tissue thickening with collagen tissue matrix derivate membrane in an aesthetic area. A case report Algirdas Puišys, Saulius Žukauskas, Ričardas Kubilius, Eglė Vindašiūtė, Tomas Linkevičius 64-68 © 2017 Stomatologija		Stomatologija 2017; 19 (2): 44-50 398 KB The comparison of cement- and screw-retained crowns from technical and biological points of view Aira Ragauskaitė, Gediminas Žekonis, Juozas Žilinskas, Alvydas Gleiznys, Eglė Ivanauskienė, Darius Gleiznys Summary* Objective. The aim of this review was to evaluate the most common complications in implant prosthodontics with porcelain-fused-to-metal crowns, to evaluate the influence of biomechanical properties on fractures and cracks of veneered porcelain, and to compare the effects of crowns with different connections on soft tissues. Material and Methods. A search of literature in the English language between 2009 and 2015 was conducted using the following databases: Medline via PubMed, Science Direct, Wiley online library, Taylor& Francis, and Cochrane library. In total, 10 studies that met the inclusion criteria were found. Results. Four investigations showed that technical complications more often occurred in screw-retained prostheses, although two studies concluded that cement-retained crowns were also susceptible to technical complications. Two investigations showed that the deeper the abutment margin was subgingivally, the more excess cement was left in the peri-implant sulcus. Four studies concluded that cement-retained prostheses were more susceptible to biological complications, but two investigations also showed that biological complications were observed in tissues adjacent to screw-retained crowns. Conclusions. The research of literature data for the last five years showed that screw-retained crowns demonstrated more failures such as porcelain cracks and fractures or screw loosening, while cement-retained crowns caused more severe biological complications such as peri-implant soft tissue inflammation or pathological bone resorption. Key words: cement-retained restorations, screw-retained restorations, implant-supported prosthesis, peri-implant soft tissue health, biological and technical complications of implant restorations. Received: 19 03 2015 Accepted for publishing: 28 06 2017 *Clinical Department of Dental and Maxillofacial Orthopedics, Faculty of Odontology, Medical Academy, Lithuanian University of Health Sciences Address correspondence to Aira Ragauskaitė, Clinic of Prosthodontics, Lithuanian University of Health Sciences, Sukileliu pr. 51, LT-50106 Kaunas, Lithuania. E-mail address: airaragauskaite@gmail.com