Table 3.
Summary of selected studies.
| Author and Year | Edentation | Number of Implants | Angulation | Implants Label | Impression Techniques | Sample Size | IOS | Assessment of Accuracy | Outcomes (Greater Accuracy) |
|---|---|---|---|---|---|---|---|---|---|
| Abdel-Azim et al., 2014 [65] | CE and SI | 4, 1 | -- | Straumann TL | Closed tray (abutment level) DI (abutment level) |
6 | iTero | Marginal discrepancy (microscopy) | SI: CI CE: DI |
| Papaspyridakos et al., 2016 [42] | CE | 5 | 0°, 10°, 15° | Straumann BL | Open tray (with and without splinting, abutment and implant level) DI (implant level) |
10 | Trios (3Shape) | 3D deviation (stl superimposition) |
No differences (DI more accurate than non-splinted implant level) Angulation did not affect any of them |
| Amin et al., 2017 [43] | CE | 5 | 0°, 10°, 15° | Straumann BL | Open tray (splinted, implant level) DI (implant level) |
10 | CEREC Omnicam 4.4.1 (Sirona) True Definition 4.1 (3M ESPE) |
3D deviation (stl superimposition) |
DI True Definition greater accuracy Angulation did not affect any of them |
| Menini et al., 2018 [44] | CE | 4 | -- | Biomet 3i | Open tray (with and without splinting, abutment level) Closed tray (abutment level) DI (abutment level) |
5 | True Definition (3M ESPE) |
Linear and angular deviation (CMM) Marginal discrepancy (Sheffield test, microscopy) |
DI |
| Alikhasi et al., 2018 [45] | CE | 4 | 0°, 45° | Nobel Replace Nobel Branemark |
Open tray (non-splinted, implant level) Closed tray (implant level) DI (implant level) |
15 | Trios (3Shape) |
Linear and angular deviation (CMM) | DI (no affected by platform or angulation) |
| Gintaute et al., 2018 [53] | CE | 2, 4, 6 | 0°, 45° | Biomet 3i Certain | Open tray (non-splinted, implant level) DI (implant level) |
5 | True Definition (3M ESPE) |
3D deviation (CMM) |
No differences |
| Moura et al., 2019 [46] | CE | 6 | 0°, 15° | Implacil (external connection) | Open tray (splinted, abutment level) Closed tray (abutment level) DI (abutment level) |
5 | Dental Wings 3 series (Straumann) |
Digital caliper (linear deviation) | No differences Angulation did not affect any of them |
| Kim et al., 2019 [47] | CE | 5 | -- | Warantec IU | Open tray (splinted, implant level) DI (implant level) |
10 | Trios 3 (3Shape) |
Linear and angular deviation (CMM) | CI |
| Rech-Ortega et al., 2019 [48] | CE | 6 | -- | Biomet 3i Certain | Open tray (non-splinted, implant level) DI (implant level) |
20 | True Definition (3M ESPE) |
Linear and angular deviation (CMM) | No differences |
| Tan et al., 2019 [49] | CE | 6, 8 | -- | Straumann BL | Open tray (splinted, implant level) DI (implant level) |
5 | Trios True Definition |
Linear, angular and 3D deviation (CMM) | CI TRIOS greater accuracy |
| Ribeiro et al., 2019 [50] | CE | 4 | 0°, 15° | Klockner KL | Closed tray (implant level) Open tray (with and without splinting, implant level) DI (implant level) |
10 | True Definition (3M ESPE) |
3D deviation (stl superimposition) | DI (in parallel implants) Angulated implants: no differences |
| Huang et al., 2020 [51] | CE | 4 | -- | Straumann BL | Open tray (splinted, abutment level) DI (abutment level; 3 different scanbody designs) |
10 | Trios 3 (3Shape) |
3D deviation (stl superimposition) | CI |
| Albayrak et al., 2020 [52] | CE | 8 | 40°, 20°, 25°, 15° | Dyna Helix DC | Open tray (non-splinted, abutment level) DI (abutment level) |
10 | Carestream 3500 Trios 3 Cerec Omnicam |
Linear and angular deviation (reverse engineering software) |
DI Carestream 3500 greater trueness |
| Revilla-León et al., 2020 [11] | CE | 6 | 0°, 4°, 10° | Straumann BL | Open tray (splinted, abutment level) DI with IOS (abutment level) DI with photogrammetry (abutment level) |
10 | iTero (Cadent) Trios 3 (3Shape) |
Linear, angular and 3D deviation (CMM) | CI Photogrammetry the least accurate |
| Lyu et al., 2021 [54] | CE | 8 | -- | Camlog screw-line | Open tray (splinted, implant level) DI (implant level) |
10 | Trios 2 (3Shape) |
Linear and 3D deviation (stl superimposition) | CI |
| Lin et al., 2015 [55] | PE | 2 | 0°, 15°, 30°, 45° | Straumann TL | Open tray (non-splinted, implant level) DI (implant level) |
10 | iTero (Cadent) | Linear and angular deviation (stl superimposition) | CI DI: better behavior at higher angulation |
| Basaki et al., 2017 [56] | PE | 2 | 0°, 10°, 30° | Straumann BL | Open tray (non-splinted, implant level) DI (implant level) |
10 | iTero (Cadent) | Linear and angular deviation (stl superimposition) | CI Angulation did not affect any of them |
| Chew et al., 2017 [57] | PE | 2 | -- | Straumann BL Straumann TL |
Open tray (non-splinted, implant level) DI (implant level) |
5 | Trios iTero True Definition |
Linear and angular deviation (CMM) | CI (in BL) TL no differences TRIOS greater accuracy |
| Chia et al., 2017 [58] | PE | 2 | 0°, 10°, 20° | Straumann BL | Open tray (non-splinted, implant level) DI (implant level) |
5 | Trios (3Shape) | Linear, angular and 3D deviation (CMM) | CI (in parallel implants) No differences in angulated implants Angulation affected both impressions |
| Marghalini et al., 2018 [59] | PE | 2 | 30° | Nobel Replace Straumann TL |
Open tray (splinted, implant level) DI (implant level) |
10 | Cerec Omnicam True Definition |
3D deviation (stl superimposition) |
DI True Definition greater accuracy |
| Alshawaf et al., 2018 [60] | PE | 2 | 30° | Nobel Replace | Open tray (splinted, implant level) DI (implant level) |
10 | Cerec Omnicam True Definition |
3D deviation (stl superimposition) |
CI CEREC Omnicam greater accuracy |
| Bohner et al., 2019 [61] | PE | 3 | -- | S.I.N Implant System | Open tray (splinted, implant level) DI (implant level) |
10 | Dental Wings (Straumann) | 3D deviation (stl superimposition) |
CI (in cusps) |
| Alsharbaty et al., 2019 [41] | PE | 2 | -- | Implantium internal connection | Open tray (splinted, implant level) Closed tray (implant level) DI (implant level) |
36 | Trios 3 (3Shape) | Linear and angular deviation, interimplant distances (CMM) | CI |
| Abduo et al., 2021 [62] | PE | 2 | 0°, 15° | Straumann TL | Open tray (splinted, implant level) Closed tray (non-splinted, implant level) DI (implant level) |
10 | Trios 4 Medit i500 True Definition |
Linear and angular deviation (stl superimposition) | DI DI less affected by angulation True Definition less accuracy |
| Lee et al., 2015 [63] | SI | 1 | -- | Straumann BL | Closed tray (implant level) DI (implant level) |
30 | iTero (Cadent) | 3D deviation (stl superimposition) |
CI (most favorable implant vertical position) |
| Yilmaz et al., 2021 [64] | SI | 1 | -- | Neoss Proactive Straight | Open tray (implant level) DI with scan body (implant level) DI with healing abutment-scanpeg system (implant level) |
10 | Trios 3 (3Shape) | Linear and angular deviation (stl superimposition) | DI |
CE: complete edentation. PE: partial edentation. SI: single implant. TL: tissue level. BL: bone level. CMM: coordinate measure machine. STL: standard tessellation language.