Cemented versus screw‐retained posterior implant‐supported single crowns: A 24‐month randomized controlled clinical trial

Abstract

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Proximal contact loss between implant prostheses and adjacent natural teeth: A qualitative systematic review of prevalence, influencing factors and implications

“…Searching the references of the literature identified an additional 2 relevant studies. Therefore, the total number of included studies in this review was 19 studies ( Table 2 ) [ 2 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 23 , 24 , 25 , 27 , 28 , 29 ]. The included studies evaluated the proximal contact quality via dental floss, metal strip, metal strip attached to force gauge, and radiograph.…”

“…A total of 18 studies measured the prevalence of PCL at the prosthesis or surface level [ 2 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 23 , 24 , 25 , 27 , 29 ]. A consistent observation across the included studies was that the longer the duration of service, the greater the prevalence of PCL [ 10 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 27 , 28 , 29 ]. Some studies indicated that the first PCL can occur within a few months of service, specifically after 3 months [ 12 , 28 ], 4 months [ 14 ], and 6 months [ 17 ].…”

“…A prospective study found a 16.5% incidence of PCL after 1 year, with an increase to 25.7% after 2 years [ 27 ]. A similar prospective study reported a 3.3% incidence of PCL after 1 year and 21.3% after 2 years [ 29 ]. Another study showed 30% incidence of PCL in 1 year, with PCL incidence reduced to 15% if the patients were wearing a retainer [ 25 ].…”

“…Two studies found cement-retained restorations to be associated with less PCL incidence than screw-retained restorations. However, 1 of them reported this tendency on the distal PC [ 14 ], while the other study reported the tendency on the mesial PC [ 29 ].…”

Mechanical Stability of Screw-Retained Monolithic and Bi-layer Posterior Hybrid Abutment Crowns after Thermomechanical Loading: An In Vitro Study

“…Recent reviews [1,3,35] and clinical studies [36,37] comparing both cemented and screw-retained implant-supported restorations could not reveal a favorable type of retention over the other. However, at present, particularly for single-unit restorations screw-retained restorations are in favor, as these show lesser biological complications than cemented solutions and allow easier retrievability in case of technical complications [1,35,38,39].…”