2.15.21_Zimmer_COIR Flashcards
What is the occurrence of complications in implant patients? (In Italy)
Cecchinato COIR
Retrospective Case Series (n = 241 patients with 729 implants)
Followup: average of 5 years
Looked at biologic & prosthetic complications
30% had at least 1 complication
Technical complications: 19.5%
Marginal bone loss: 14.1%
Implant loss: 4.6% (patient level)
What are the outcomes of bone preservation or augmentation simultaneous with or prior to dental implant placement?
Shi COIR
Systematic review on the topics
783 articles were included.
The article basically categorized all 783 articles on this topic, describing what % of articles focused on specific outcomes.
No real findings were discussed
What study compared spontaneous healing with socket seal vs. GBR?
MacBeth COIR
RCT single-blinded
Compared radiographic bone changes between the 3 treatments (GBR, socket seal, control)
* GBR: Was basically just ridge preservation using BioOss and a BioGide collagen membrane
* Socket seal: BioOss and Mucograft collagen matrix
* ControL: Spontaneous healing
Findings: Mid-buccal ridge height and mid-palatal ridge height: Increased with socket shield (Mucograft) = +0.65mm and stable with GBR (socket pres with BioGide) = +0.07mm and decreased with control (-0.52 mm)
What study compared spontaneous healing with socket seal vs. GBR?
MacBeth COIR
RCT single-blinded
Compared radiographic bone changes between the 3 treatments (GBR, socket seal, control)
* GBR: Was basically just ridge preservation using BioOss and a BioGide collagen membrane
* Socket seal: BioOss and Mucograft collagen matrix
* ControL: Spontaneous healing
Findings: Mid-buccal ridge height and mid-palatal ridge height: Increased with socket shield (Mucograft) = +0.65mm and stable with GBR (socket pres with BioGide) = +0.07mm and decreased with control (-0.52 mm)
What Italian study describes intraoperative complications and early implant failure after transcrestal sinus floor elevation with bone height ≤ 5 mm?
Stacchi COIR
After 1 year of crown delivery, 97.2% were in function. (148 of 430 implants)
Early implant failure: 2.8%, correlated with sinus perforation (OR: 8.5) and large wide sinus ≥ 12mm (OR: 4.21)
Sinus perforation: 7.2%
* Narrow sinus: 1.1% incidence
* Wide sinus: 16.1% incidence
* So, wider sinus is more likely to perf when doing a vertical sinus lift when ridge is ≤ 5 mm
What is the effect of Bucco-palatal implant position and its effect on the soft tissue?
Furhauser COIR
Inclusion criteria:
Unilateral single implant crowns in the region of the central or lateral maxillary incisor
The final prosthodontic restoration in situ for at least 1 year.
Measurements:
Digital intraoral scans were superimposed over a scan of the master cast or the original digital data set (73 patients)
3-dimensional distances and angles were analyzed with a computer planning program
Findings: **significant inverse correlation between apical displacement (AD) and saggital implant position (SIP)
** = more recession when implant is more buccal
What study compared the 10-year results of Maxillary bar overdentures using 4 versus 6 posterior implants?
Slot COIR
46 participants completed the 10- year evaluation.
Ten-year survival rate of the implants was high in both groups, 100% (4-implant gp.) and 96.7% (6-implant gp.).
Incidence at patient level of peri-implant mucositis was 34.6% in the 4-implant group and 65.0% in the 6-implant group.
Incidence at patient level of peri-implantitis was 38.5% in the 4-implant group and 20.0% in the 6-implant group.
NSSD in MBL between the 2 groups at 5 or 10-yr FU.
Conclusion: Comparable outcomes between the 4- and 6- implant maxillary bar overdentures
What German study looked at the in vitro scanning accuracy for multiple implants in the edentulous arch?
Kernen COIR
In vitro (on casts) study
Aim: To evaluate a newly developed scan aid in various designs and colors to improve the accuracy of multi-implant scans.
Used a universal scan aid in three different designs (circular, square, irregular) and three different materials (colors: beige, gray, white) applied on a master model of six implants in an edentulous maxilla in vitro
10 scans using an intra-oral scanner of each scan aid, and no scan aid were acquired and analyzed with a software.
Precision (= difference between repeated values) and trueness (= difference between value and actual value) was analyzed in a statistical model (a=0.05)
Findings: Significant improvement in trueness when using scan aid compared to no scan aid
Overall, the beige irregular scan aid had the highest trueness and showed significant differences compared to unsplinted scans.
The precision showed more heterogenous results and decreased when using the scan aid.
What study looked at Surface decontamination protocols for surgical treatment of peri-implantitis?
Balma COIR
Systematic Review & meta-analysis
The treatment success for curettes was 0.286, for systemic AB was 0.514, CHX+CPC was 0.078 = basically no treatments have any real effects
