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Each row is one question a systematic review asked: who, what, compared with what, and which outcome, with the effect it found and how certain that is. Words match anywhere in the field.
87 questions in 18 reviews · Implants and prosthodontics
current versionsNo studies 87 · 100%Ungraded 0 · 0%Very low 0 · 0%Low 0 · 0%Moderate 0 · 0%High 0 · 0%
Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.
| Question | Effect | Evidence | Status / GRADE |
|---|---|---|---|
Adjunctive antimicrobial photodynamic therapy (aPDT) applied after subgingival instrumentation (SI) vs Subgingival instrumentation (SI) alone (hand or power-driven, or both), or SI plus placebo/sham aPDT Patient satisfaction · Adults (> 18 years) with a clinical diagnosis of periodontitis, receiving active (non-surgical anti-infective) treatment Adjunctive antimicrobial photodynamic therapy for treating periodontal and peri‐implant diseases (2024) · Cochrane | No studies reported data for this outcome. | NR | No studies |
Adjunctive antimicrobial photodynamic therapy (aPDT) applied after submucosal instrumentation (SI) vs Submucosal instrumentation (SI) alone, or SI plus placebo/sham aPDT Quality of life · Adults (> 18 years) with peri-implant mucositis, receiving active treatment Adjunctive antimicrobial photodynamic therapy for treating periodontal and peri‐implant diseases (2024) · Cochrane | Only one study reported evidence for adjunctive aPDT in people with peri-implant disease (Al Rifaiy 2022). Data were only available for two outcomes (PPD and BOP), both reported only at three months. No studies… | NR | No studies |
Adjunctive antimicrobial photodynamic therapy (aPDT) applied after submucosal instrumentation (SI) vs Submucosal instrumentation (SI) alone, or SI plus placebo/sham aPDT Change in gingival recession (REC) · Adults (> 18 years) with peri-implant mucositis, receiving active treatment Adjunctive antimicrobial photodynamic therapy for treating periodontal and peri‐implant diseases (2024) · Cochrane | Only one study reported evidence for adjunctive aPDT in people with peri-implant disease (Al Rifaiy 2022). Data were only available for two outcomes (PPD and BOP), both reported only at three months. No studies… | NR | No studies |
Adjunctive antimicrobial photodynamic therapy (aPDT) applied after submucosal instrumentation (SI) vs Submucosal instrumentation (SI) alone, or SI plus placebo/sham aPDT Outcome NR · Adults (> 18 years) with peri-implant mucositis, receiving supportive treatment Adjunctive antimicrobial photodynamic therapy for treating periodontal and peri‐implant diseases (2024) · Cochrane | Planned comparison; no studies met the inclusion criteria. The review found only one study of peri-implant disease (peri-implant mucositis, active treatment) and no studies including people with peri-implantitis… | NR | No studies |
Adjunctive antimicrobial photodynamic therapy (aPDT) applied after submucosal instrumentation (SI) vs Submucosal instrumentation (SI) alone, or SI plus placebo/sham aPDT Outcome NR · Adults (> 18 years) with peri-implantitis, receiving active treatment Adjunctive antimicrobial photodynamic therapy for treating periodontal and peri‐implant diseases (2024) · Cochrane | Planned comparison; no studies met the inclusion criteria. The review found only one study of peri-implant disease (peri-implant mucositis, active treatment) and no studies including people with peri-implantitis… | NR | No studies |
Adjunctive antimicrobial photodynamic therapy (aPDT) applied after subgingival instrumentation (SI) vs Subgingival instrumentation (SI) alone (hand or power-driven, or both), or SI plus placebo/sham aPDT Pocket closure · Adults (> 18 years) with a clinical diagnosis of periodontitis, receiving active (non-surgical anti-infective) treatment · 6 months (change from baseline) Adjunctive antimicrobial photodynamic therapy for treating periodontal and peri‐implant diseases (2024) · Cochrane | No studies measured this outcome at 6 months (SoF row labeled 'Change in pocket depth from baseline to 6 months after initial treatment'). | NR | No studies |
Adjunctive antimicrobial photodynamic therapy (aPDT) applied after submucosal instrumentation (SI) vs Submucosal instrumentation (SI) alone, or SI plus placebo/sham aPDT Outcome NR · Adults (> 18 years) with peri-implantitis, receiving supportive treatment Adjunctive antimicrobial photodynamic therapy for treating periodontal and peri‐implant diseases (2024) · Cochrane | Planned comparison; no studies met the inclusion criteria. The review found only one study of peri-implant disease (peri-implant mucositis, active treatment) and no studies including people with peri-implantitis… | NR | No studies |
Adjunctive antimicrobial photodynamic therapy (aPDT) applied after submucosal instrumentation (SI) vs Submucosal instrumentation (SI) alone, or SI plus placebo/sham aPDT Patient satisfaction · Adults (> 18 years) with peri-implant mucositis, receiving active treatment Adjunctive antimicrobial photodynamic therapy for treating periodontal and peri‐implant diseases (2024) · Cochrane | Only one study reported evidence for adjunctive aPDT in people with peri-implant disease (Al Rifaiy 2022). Data were only available for two outcomes (PPD and BOP), both reported only at three months. No studies… | NR | No studies |
Adjunctive antimicrobial photodynamic therapy (aPDT) applied after subgingival instrumentation (SI) vs Subgingival instrumentation (SI) alone (hand or power-driven, or both), or SI plus placebo/sham aPDT Quality of life · Adults (> 18 years) with a clinical diagnosis of periodontitis, receiving active (non-surgical anti-infective) treatment Adjunctive antimicrobial photodynamic therapy for treating periodontal and peri‐implant diseases (2024) · Cochrane | No studies reported data for this outcome. | NR | No studies |
Adjunctive antimicrobial photodynamic therapy (aPDT) applied after submucosal instrumentation (SI) vs Submucosal instrumentation (SI) alone, or SI plus placebo/sham aPDT Any adverse effect related to aPDT · Adults (> 18 years) with peri-implant mucositis, receiving active treatment Adjunctive antimicrobial photodynamic therapy for treating periodontal and peri‐implant diseases (2024) · Cochrane | Only one study reported evidence for adjunctive aPDT in people with peri-implant disease (Al Rifaiy 2022). Data were only available for two outcomes (PPD and BOP), both reported only at three months. No studies… | NR | No studies |
Adjunctive antimicrobial photodynamic therapy (aPDT) applied after subgingival instrumentation (SI) vs Subgingival instrumentation (SI) alone (hand or power-driven, or both), or SI plus placebo/sham aPDT Quality of life · Adults (> 18 years) with recurrent periodontitis, receiving supportive (maintenance) periodontal care Adjunctive antimicrobial photodynamic therapy for treating periodontal and peri‐implant diseases (2024) · Cochrane | No studies reported data for this outcome. | NR | No studies |
Adjunctive antimicrobial photodynamic therapy (aPDT) applied after submucosal instrumentation (SI) vs Submucosal instrumentation (SI) alone, or SI plus placebo/sham aPDT Pocket closure · Adults (> 18 years) with peri-implant mucositis, receiving active treatment Adjunctive antimicrobial photodynamic therapy for treating periodontal and peri‐implant diseases (2024) · Cochrane | Only one study reported evidence for adjunctive aPDT in people with peri-implant disease (Al Rifaiy 2022). Data were only available for two outcomes (PPD and BOP), both reported only at three months. No studies… | NR | No studies |
Adjunctive antimicrobial photodynamic therapy (aPDT) applied after subgingival instrumentation (SI) vs Subgingival instrumentation (SI) alone (hand or power-driven, or both), or SI plus placebo/sham aPDT Patient satisfaction · Adults (> 18 years) with recurrent periodontitis, receiving supportive (maintenance) periodontal care Adjunctive antimicrobial photodynamic therapy for treating periodontal and peri‐implant diseases (2024) · Cochrane | No studies reported data for this outcome. | NR | No studies |
Adjunctive antimicrobial photodynamic therapy (aPDT) applied after submucosal instrumentation (SI) vs Submucosal instrumentation (SI) alone, or SI plus placebo/sham aPDT Change in clinical attachment level (CAL) · Adults (> 18 years) with peri-implant mucositis, receiving active treatment Adjunctive antimicrobial photodynamic therapy for treating periodontal and peri‐implant diseases (2024) · Cochrane | Only one study reported evidence for adjunctive aPDT in people with peri-implant disease (Al Rifaiy 2022). Data were only available for two outcomes (PPD and BOP), both reported only at three months. No studies… | NR | No studies |
Adjunctive antimicrobial photodynamic therapy (aPDT) applied after subgingival instrumentation (SI) vs Subgingival instrumentation (SI) alone (hand or power-driven, or both), or SI plus placebo/sham aPDT Pocket closure · Adults (> 18 years) with recurrent periodontitis, receiving supportive (maintenance) periodontal care · 6 months (change from baseline) Adjunctive antimicrobial photodynamic therapy for treating periodontal and peri‐implant diseases (2024) · Cochrane | No studies measured this outcome at 6 months (SoF row labeled 'Change in pocket depth from baseline to 6 months after treatment'); no studies reported these data at six months after treatment. | NR | No studies |
ARP with alloplast plus barrier membrane vs ARP with alloplast without membrane Aesthetic outcomes of future prosthodontic rehabilitation · Adults aged 18 years or older, in good general health (including well-controlled systemic disease), requiring… · 9 months Interventions for replacing missing teeth: alveolar ridge preservation techniques for dental implant site… (2021) · Cochrane | Outcome not reported | 0 studies | No studies |
ARP with alloplast vs Extraction alone Aesthetic outcomes of future prosthodontic rehabilitation · Adults aged 18 years or older, in good general health (including well-controlled systemic disease), requiring… · 6 months Interventions for replacing missing teeth: alveolar ridge preservation techniques for dental implant site… (2021) · Cochrane | Outcome not reported | 0 studies | No studies |
ARP with xenograft (bone graft) vs Extraction alone Aesthetic outcomes of future prosthodontic rehabilitation · Adults aged 18 years or older, in good general health (including well-controlled systemic disease), requiring… · 6 to 36 months Interventions for replacing missing teeth: alveolar ridge preservation techniques for dental implant site… (2021) · Cochrane | Outcome not reported | 0 studies | No studies |
ARP with alloplast vs Extraction alone Implant failure rate · Adults aged 18 years or older, in good general health (including well-controlled systemic disease), requiring… · 6 months Interventions for replacing missing teeth: alveolar ridge preservation techniques for dental implant site… (2021) · Cochrane | Outcome not reported | 0 studies | No studies |
ARP with allograft plus synthetic cell-binding peptide P-15 vs ARP with allograft without P-15 Implant failure rate · Adults aged 18 years or older, in good general health (including well-controlled systemic disease), requiring… · 6 months Interventions for replacing missing teeth: alveolar ridge preservation techniques for dental implant site… (2021) · Cochrane | Outcome not reported | 0 studies | No studies |
ARP with allograft vs ARP with xenograft Implant failure rate · Adults aged 18 years or older, in good general health (including well-controlled systemic disease), requiring… · 6 months Interventions for replacing missing teeth: alveolar ridge preservation techniques for dental implant site… (2021) · Cochrane | Outcome not reported | 0 studies | No studies |
ARP with alloplast plus barrier membrane vs ARP with alloplast without membrane Need for additional augmentation prior to implant placement · Adults aged 18 years or older, in good general health (including well-controlled systemic disease), requiring… · 9 months Interventions for replacing missing teeth: alveolar ridge preservation techniques for dental implant site… (2021) · Cochrane | Outcome not reported | 0 studies | No studies |
ARP with alloplast vs Extraction alone Changes in bucco-lingual/palatal width of alveolar ridge (mm) · Adults aged 18 years or older, in good general health (including well-controlled systemic disease), requiring… · 6 months Interventions for replacing missing teeth: alveolar ridge preservation techniques for dental implant site… (2021) · Cochrane | Outcome not reported | 0 studies | No studies |
ARP with alloplast vs Extraction alone Need for additional augmentation prior to implant placement · Adults aged 18 years or older, in good general health (including well-controlled systemic disease), requiring… · 6 months Interventions for replacing missing teeth: alveolar ridge preservation techniques for dental implant site… (2021) · Cochrane | Outcome not reported | 0 studies | No studies |
ARP with demineralised bone matrix, single particle size vs ARP with demineralised bone matrix, multiple particle size Aesthetic outcomes of future prosthodontic rehabilitation · Adults aged 18 years or older, in good general health (including well-controlled systemic disease), requiring… · 6 months Interventions for replacing missing teeth: alveolar ridge preservation techniques for dental implant site… (2021) · Cochrane | Outcome not reported | 0 studies | No studies |
ARP with demineralised bone matrix, single particle size vs ARP with demineralised bone matrix, multiple particle size Implant failure rate · Adults aged 18 years or older, in good general health (including well-controlled systemic disease), requiring… · 6 months Interventions for replacing missing teeth: alveolar ridge preservation techniques for dental implant site… (2021) · Cochrane | Outcome not reported | 0 studies | No studies |
ARP with alloplast vs ARP with xenograft Aesthetic outcomes of future prosthodontic rehabilitation · Adults aged 18 years or older, in good general health (including well-controlled systemic disease), requiring… · 6 to 8 months Interventions for replacing missing teeth: alveolar ridge preservation techniques for dental implant site… (2021) · Cochrane | Outcome not reported | 0 studies | No studies |
ARP with allograft plus synthetic cell-binding peptide P-15 vs ARP with allograft without P-15 Need for additional augmentation prior to implant placement · Adults aged 18 years or older, in good general health (including well-controlled systemic disease), requiring… · 6 months Interventions for replacing missing teeth: alveolar ridge preservation techniques for dental implant site… (2021) · Cochrane | Outcome not reported | 0 studies | No studies |
ARP with alloplast plus barrier membrane vs ARP with alloplast without membrane Implant failure rate · Adults aged 18 years or older, in good general health (including well-controlled systemic disease), requiring… · 9 months Interventions for replacing missing teeth: alveolar ridge preservation techniques for dental implant site… (2021) · Cochrane | Outcome not reported | 0 studies | No studies |
ARP with allograft vs ARP with xenograft Aesthetic outcomes of future prosthodontic rehabilitation · Adults aged 18 years or older, in good general health (including well-controlled systemic disease), requiring… · 6 months Interventions for replacing missing teeth: alveolar ridge preservation techniques for dental implant site… (2021) · Cochrane | Outcome not reported | 0 studies | No studies |
ARP with demineralised bone matrix, single particle size vs ARP with demineralised bone matrix, multiple particle size Need for additional augmentation prior to implant placement · Adults aged 18 years or older, in good general health (including well-controlled systemic disease), requiring… · 6 months Interventions for replacing missing teeth: alveolar ridge preservation techniques for dental implant site… (2021) · Cochrane | Outcome not reported | 0 studies | No studies |
ARP with allograft plus synthetic cell-binding peptide P-15 vs ARP with allograft without P-15 Aesthetic outcomes of future prosthodontic rehabilitation · Adults aged 18 years or older, in good general health (including well-controlled systemic disease), requiring… · 6 months Interventions for replacing missing teeth: alveolar ridge preservation techniques for dental implant site… (2021) · Cochrane | Outcome not reported | 0 studies | No studies |
Tooth- and tissue-supported removable partial denture: dual-impression technique with a different material vs An alternative dual-impression technique with a different material Outcome NR · Partially edentulous people requiring a tooth- and tissue-supported (distal-extension) removable partial denture Final‐impression techniques and materials for making complete and removable partial dentures (2018) · Cochrane | We did not find any trials for this comparison. | 0 studies | No studies |
Alginate (two stage-two step final/wash impression) vs Silicone elastomer (two stage-two step) Number of border adjustments and sore spots after insertion of denture · Completely edentulous people Final‐impression techniques and materials for making complete and removable partial dentures (2018) · Cochrane | Not measured | 0 studies | No studies |
Single-stage alginate impression (simplified method) vs Two stage-two step zinc-oxide eugenol (ZoE) traditional method Number of border adjustments and sore spots after insertion of denture · Completely edentulous people Final‐impression techniques and materials for making complete and removable partial dentures (2018) · Cochrane | Not measured | 0 studies | No studies |
Ball (stud) attachment system vs Telescopic attachment system Prosthodontic success (specific categorization) · Edentulous adults receiving mandibular implant overdentures (opposing conventional complete maxillary dentures) · Short term (1 to 3 years) Interventions for replacing missing teeth: attachment systems for implant overdentures in edentulous jaws (2018) · Cochrane | no estimate extracted | NR | No studies |
Wax (fluid wax), two stage-two step selective pressure final impression vs Polysulfide rubber (elastomer) Participant-reported oral health-related quality of life (OHIP-EDENT) · Completely edentulous people Final‐impression techniques and materials for making complete and removable partial dentures (2018) · Cochrane | Not measured | 0 studies | No studies |
Wax (fluid wax), two stage-two step selective pressure final impression vs Polysulfide rubber (elastomer) Participant-reported quality of the denture · Completely edentulous people Final‐impression techniques and materials for making complete and removable partial dentures (2018) · Cochrane | Not measured | 0 studies | No studies |
Ball (stud) attachment system vs Telescopic attachment system Cost (treatment time and/or material costs) · Edentulous adults receiving mandibular implant overdentures (opposing conventional complete maxillary dentures) Interventions for replacing missing teeth: attachment systems for implant overdentures in edentulous jaws (2018) · Cochrane | no estimate extracted | NR | No studies |
Altered-cast impression technique (ACIP), polyether vs One-piece cast technique (OPC), polyether Participant-reported oral health-related quality of life · Partially edentulous people requiring a tooth- and tissue-supported (distal-extension) removable partial denture Final‐impression techniques and materials for making complete and removable partial dentures (2018) · Cochrane | Not measured | 0 studies | No studies |
Tooth-supported removable partial denture: same impression material, different final-impression technique vs The same material with an alternative final-impression technique Outcome NR · Partially edentulous people requiring a removable partial denture Final‐impression techniques and materials for making complete and removable partial dentures (2018) · Cochrane | We did not find any trials for this comparison. | 0 studies | No studies |
Tooth-supported removable partial denture: different impression material, same final-impression technique vs The same technique with an alternative final-impression material Outcome NR · Partially edentulous people requiring a removable partial denture Final‐impression techniques and materials for making complete and removable partial dentures (2018) · Cochrane | We did not find any trials for this comparison. | 0 studies | No studies |
Any attachment system for maxillary implant overdentures vs A different attachment system for maxillary implant overdentures Outcome NR · Edentulous adults receiving maxillary implant overdentures Interventions for replacing missing teeth: attachment systems for implant overdentures in edentulous jaws (2018) · Cochrane | no estimate extracted | NR | No studies |
Ball (stud) attachment system vs Magnetic attachment system Patient preference (cross-over trials) · Edentulous adults receiving mandibular implant overdentures (opposing conventional complete maxillary dentures) Interventions for replacing missing teeth: attachment systems for implant overdentures in edentulous jaws (2018) · Cochrane | no estimate extracted | NR | No studies |
Metal-free implant-supported FDPs (zirconia-toughened alumina; In-Ceram Zirconia) vs Metal-free implant-supported FDPs (yttria-stabilized tetragonal zirconia; Denzir) Periodontal/peri-implant status (secondary outcomes) · Adults (18 years or older) needing an implant-supported fixed dental prosthesis in the posterior region Metal‐free materials for fixed prosthodontic restorations (2017) · Cochrane | No data were presented for any of the pre-specified secondary outcomes. Follow-up visits registered pocket depth, bleeding on probing and mobility but the data were not reported. | 0 studies | No studies |
Metal-free FDPs (lithium disilicate) vs Metal-ceramic FDPs Aesthetic evaluation · Adults (18 years or older) needing a three-unit fixed dental prosthesis (FDP) Metal‐free materials for fixed prosthodontic restorations (2017) · Cochrane | No data were presented with regard to aesthetics. | 0 studies | No studies |
Metal-free FDPs (zirconia ceramic) vs Metal-ceramic FDPs Periodontal/peri-implant status (secondary outcomes) · Adults (18 years or older) needing a three-unit fixed dental prosthesis (FDP) Metal‐free materials for fixed prosthodontic restorations (2017) · Cochrane | No data were presented for any of the pre-specified secondary outcomes. The trial registered pocket depth, bleeding on probing and mobility at follow-up visits but did not report the data. | 0 studies | No studies |
Metal-free implant-supported FDPs (zirconia-toughened alumina; In-Ceram Zirconia) vs Metal-free implant-supported FDPs (yttria-stabilized tetragonal zirconia; Denzir) Aesthetic evaluation · Adults (18 years or older) needing an implant-supported fixed dental prosthesis in the posterior region Metal‐free materials for fixed prosthodontic restorations (2017) · Cochrane | No data were presented with regard to aesthetics. | 0 studies | No studies |
Metal-free single crowns (full-contour zirconia) vs Cast gold (conventional metal) single crowns Aesthetic evaluation · Adults (18 years or older) needing a single crown in the molar or premolar region Metal‐free materials for fixed prosthodontic restorations (2017) · Cochrane | No data were presented with regard to aesthetics. | 0 studies | No studies |
Metal-free FDPs (lithium disilicate) vs Metal-ceramic FDPs Periodontal/peri-implant status and occlusal wear (secondary outcomes) · Adults (18 years or older) needing a three-unit fixed dental prosthesis (FDP) Metal‐free materials for fixed prosthodontic restorations (2017) · Cochrane | No data were presented for any of the pre-specified secondary outcomes. | 0 studies | No studies |