Table 2.
Clinical outcomes of the two groups at implant placement
| No ARP | ARP | |||
|---|---|---|---|---|
| Bone quality | Type 1 | 2 | 4 | |
| Type 2 | 108 | 163 | ||
| Type 3 | 59 | 80 | ||
| Type 4 | 2 | 0 | ||
| Feasibility of implant placement | Yes | 163 | 245 | |
| No | 8 | 2 | ||
| Bone augmentation at implant surgery | Horizontal bone augmentation | Yes | 66 | 45 |
| No | 105 | 202 | ||
| Vertical bone augmentation | Yes | 26 | 3 | |
| No | 145 | 244 | ||
| Sinus floor elevation | Yes | 27 | 16 | |
| No | 144 | 231 | ||
| Total | Yes | 77 | 58 | |
| No | 94 | 189 | ||
| Implant | Type | Bone level, internal | 144 | 172 |
| Bone level, external | 23 | 75 | ||
| Tissue level | 4 | 0 | ||
| Length | ≤ 8.5 mm | 10 | 15 | |
| 8.6–12.9 mm | 157 | 230 | ||
| ≥ 13 mm | 4 | 2 | ||
| Diameter | < 3.75 mm | 3 | 18 | |
| 3.75 to 4.5 mm | 113 | 126 | ||
| > 4.5 mm | 55 | 103 | ||
| System | A | 2 | 23 | |
| B | 5 | 8 | ||
| C | 73 | 109 | ||
| D | 20 | 75 | ||
| E | 66 | 12 | ||
| F | 5 | 20 | ||
| Surgical protocol | 1-stage | 121 | 155 | |
| 2-stage | 50 | 92 | ||
| Periods (months) from extraction to implant placement | Mean ± SD | 4.98 ± 4.07 | 6.29 ± 3.50 | |
| < 3 months | 50 | 0 | ||
| 3 to 6 months | 121 | 124 | ||
| > 6 months | 0 | 123 | ||
| Implant failure before loading | 1 | 4 | ||
A: Astra (Dentsply Sirona, North Carolina, USA), B: ITI Dental Implant (Institut Straumann AG, Waldenburg, Switzerland), C: USII, and TSIII (Osstem implant, Seoul, Korea), D: Implantium and Superline (Dentium, Seoul, Korea) E: Luna, and Sola (Shinhung, Seoul, Korea) F: EB (Neobiotech, Seoul, Korea)