Get Permission Pawar, Mahale, Khalikar, Rajguru, Mahajan, and Tandale: Comparative evaluation of stability and osseointegration of dental implants placed with and without platelet-rich fibrin (PRF): A systematic review


Introduction

The appearance of teeth and face in our society must be aesthetically pleasant and dentition must be harmonious.1

The demand for the use of implants results from the combined effect of various factors, including2 patients living longer,1 age-related tooth loss,3 patients are more socially active and aesthetic conscious,4 a higher incidence of partial and complete edentulism,5 conventional prosthesis complications, and6 the inherent advantages of implant-supported restorations.2

Figure 1

Implant stability graph

https://typeset-prod-media-server.s3.amazonaws.com/article_uploads/41b9e2a0-55a4-4749-9a58-951ff2148ab2/image/0cbd6f85-0ac9-42ab-85db-56699e4ba164-u2-copy.png

Several methods have been introduced to increase the osseointegration and improve implant stability, including platelet concentrates. 3 Platelet concentrates are concentrated suspensions that consist of growth factors and platelets derived from blood. Their primary role is to promote tissue regeneration and wound healing. 7

Figure 2
https://s3-us-west-2.amazonaws.com/typeset-prod-media-server/3559facd-898a-4f66-89e4-21e117a2670aimage2.png

The application of PRF over an implant to promote soft tissue thickening in order to improve the stability of peri-implant tissues and decrease the marginal bone loss. 8

Materials and Methods

Review question

Which dental implants will have greater stability i.e., those placed with platelet-rich fibrin (PRF) or without platelet-rich fibrin (PRF)?

Which dental implants will have better osseointegration i.e., those placed with platelet-rich fibrin (PRF) or without platelet-rich fibrin (PRF)?

PICO

P: Patients with dental implants

I: Dental implants placed with platelet-rich fibrin (PRF)

C: Dental implants placed without platelet-rich fibrin (PRF)

O: Stability and osseointegration of dental Implants

Search strategy

A systematic search was performed to identify the in-vitro studies of interest in English language from the year January 2011 to September 2021. The search was conducted in PubMed, Cochrane, google scholar databases. Manual search of hard copies of journals available in the institute library will also be done.

The keywords used are “stability” OR “osseointegration” AND “PRF”. An additional search with keywords “osseointegration” AND “prf” OR “stability” AND “prf” was performed and the results were scanned so as to identify any studies using different terms for fixed partial dentures. Additionally, the identified studies were scanned for cross-references pertaining to previous studies of similar designs.

Criteria for Selection and Exclusion: The inclusion and exclusion criteria as mentioned in Table 1, Table 2

Table 1

Inclusion criteria

Exclusion criteria

In vivo human studies including randomized controlled trials and clinical trials.

Articles not fulfilling inclusion criteria

Case reports

In vitro studies

Clinical study

Animal studies

Case series

Table 2

Eligibility for the study selection according to PICOS criteria:

Category

Inclusion Criteria

Exclusion Criteria

Population/ participants

In vivo human studies including randomized controlled trials and clinical trials from the year January 2011 to September 2021

In vitro studies

Intervention

Dental implants placed with platelet-rich fibrin (PRF)

Patients without dental implant placement.

Comparison

Dental implants placed without platelet-rich fibrin (PRF)

Outcome

Stability and osseointegration of dental Implants

Study design

1. In vivo human studies including randomized controlled trials and clinical trials.

2. Case reports

3. Clinical study

4. Case series

1. Articles not fulfilling inclusion criteria

2. In vitro studies

3. Animal studies

Electronic search

Electronic search of PubMed, Cochrane, Google Scholar databases for articles published from January2011 to September 2021. Manual search of hard copies of journals available in the institute library was also be done. Articles published only in the English language included. Reference list of included studies and relevant systematic reviews searched.

Manual search

Manual search of hard copies of the journals available in the institute library were done. These include the Journal of Indian Dental Association, Journal of Indian Prosthodontic Society, Journal of prosthetic dentistry and international journal of prosthodontics. A total of 1503 articles were obtained via electronic search and 0 articles were obtained through manual search, making a total of 1503 articles.

Chart 1
https://typeset-prod-media-server.s3.amazonaws.com/article_uploads/41b9e2a0-55a4-4749-9a58-951ff2148ab2/image/00d3a09e-b045-4718-ad98-d209f04074af-u2-copy.png

Results

Table 3

Dataextraction table

Author and year of publication

Study design

Number of patients

Age of patients [range]

Implant site

No. of implants placed

Patients with test group [PRF placed]

Patients control group

Follow up duration [range]

Implant stability

1.

Franz Josef Strauss et al,2018

SR

10

18-79

Partially edentulous

-

12

12

1 month

PRF enhances implant stability during early phase of osseointegration.

2.

C.Diana et al 2018

RCT

31

28.5

One or more single rooted tooth

41

21

20

3 months

PRF did not improve implant stability or bone gain.

3.

R.Tabrizi et al 2017

Split mouth RCT

20

39.60+-6.74 years

Bilateral missing maxillary molar

40

20

20

2,4,6 weeks

PRF may enhance the post -insertion stability of dental implants.

4.

Elif oncu et al 2015

Clinical Study

20

44.2+-12.5

One or more adjacent missing teeth

64

31

33

1week 1month

PRF application increased the implant stability during early healing period.

5.

Elif oncu et al 2017

Clinical study

26

40.2+-11.5

One or two missing teeth

60

30

30

Baseline 1week 1month 3months

Mean marginal bone resorption was higher in control group at 1 year.

6.

Aditi Priya et al 2020

Clinical Study

16

Group I:18-45 Group II:21-45

Sites having buccal wall defect

16

8

8

Baseline 4months

Using PRF as membrane has several advantages: autologous origin, gradual GF release, incorporating osseoinductive features to the grafted site.

Description of selected studies

The characteristics of the included studies are reported in above tables for study characteristics of included studies. Of the 5 finally selected studies, 1 article was systematic review,1 was Randomized control trial, 1 was split mouth randomized control trial and 2 were clinical studies. The present systematic review was based on 5 clinical studies including a total of 107 patients of which 114 received PRF treated implant 115 received without PRF treated implants. Implant stability and osseointegration were evaluated for 1 weeks to 3 months of time period. The implant stability of implants and osseointegration with and without PRF was evaluated for given period of time.

Risk of bias

Systematic reviews are prone to bias from various sources such as evidence selection bias, publication bias, information bias etc. Bias within each individual study can also affect the overall results of the systematic review. To minimize the evidence selection bias, extensive searches of three databases and one search engine along with the manual search of journals available in the institute library was done. Despite these comprehensive efforts, this systematic review is affected partially by selection bias. One source of this is grey literature which was not included in the search strategy of this systematic review. Also, the English language filter was used. Each individual study included in a systematic review was assessed for key sources of bias such as inadequate reporting, misleading interpretation and inappropriate extrapolation of data. The MINORS scale and Institute of health economics quality assessment scale have been used here based on the study design of the included studies to identify the risk of bias of the individual studies.

Table 4

Cochrane risk of bias assessment (rob 2)

Studies (year)

Randomization process

Allocation concealment

Blinding of participants & personnel

Blinding of outcome

Incomplete outcome data

Selective reporting

Other Bias

Elif Oncu et al 2015

?

?

?

?

-

?

?

R. Tabrizi et al 2017

+

+

+

-

?

-

?

Elif Oncu et al 2017

+

+

+

+

+

?

+

Franz Josef Strauss et al 2018

+

+

?

?

+

+

?

C. Diana et al 2018

+

+

+

+

+

-

+

Aditi Priya et al 2020

+

+

?

+

-

+

+

[i] +/: Low risk of bias; ?/: Some concerns; −/: High risk of bias

Discussion

PRF has been shown to promote the differentiation of bone marrow stem cells. The mechanisms of osteogenic differentiation are involved in some cell signal channels.9, 10, 11, 12 According to the work of Kargarpour et al. They found that PRF suppresses osteoclastogenesis in bone marrow cultures.13, 14, 15 Pichotano et al. stated that After 8 months of healing, the addition of L-PRF to DBBM allowed earlier implant placement with increased new bone formation compared to DBBM alone.16 In study conducted by Xie et al. It was shown that fibrin is a safe and reliable material for sinus lifts and can shorten the healing time.17

The maxilla alone was reported as the implant site in five of the ten studies.17, 18, 16, 19, 20 The remaining four articles studied the maxilla and the mandible as the implant sites.21, 22 Tabrizi and her team. It was found that PRF application increased implant stability during the healing period. 18, 23, 24

According to Franz Strauss, PRF might reduce alveolar width resorption and enhance stability implant during the early phase of osseointegration.25 There is a lack of adequate studies for implant placement, peri-implantitis defects, soft tissue healing, and postoperative pain, although the preliminary data seems promising.26

PRF is used as an adjunct in immediate implants with a low primary stability, thereby promoting the osseointegration and increasing the success rate. 27 The PRF also enhances the stability of implants during the remodelling & healing period, according to R. Tabrizi.

According to study conducted by Elif Oncu, PRF increases implant stability during the initial healing period. Implant stability was increased by application of the implant surface with the L-PRF. 28 There is significant increase in bone level in implants placed with PRF so rather than going for delayed healing protocol, which leads to significant bone loss, immediate placement along with grafting can be done efficiently and implantology can be practiced.29

L-PRF application enhances the amount and rate of deposition of new bone during the early healing period. 29

Conclusion

The aim of this systematic review was to evaluate and compare the stability and osteointegration of dental implants placed with and without platelet-rich fibrin (PRF).

Based on the results of this systematic review, it can be concluded that application of PRF enhances the stability and osseointegration of implants.

The study showed that

  1. PRF application prevents alveolar ridge resorption, and increases implant stability during the initial healing phases of osseointegration

  2. No significant & considerable effect of PRF was seen on immediate implants with sufficient primary stability.

  3. Implant stability was enhanced by application of the implant surface with L-PRF prior to the insertion in the osteotomy site.

  4. Simple application of PRF enhances osseointegration.

Source of Funding

None.

Conflict of Interest

None.

References

1 

B Guillaume Dental implants: A reviewLes implants dentaires : revueMorphologie201610033118998

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RR Resnik CE Misch Contemporary Implant Dentistry3rdElsevier Health - INR2008

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W Qassadi T Alshehri A Alshehri K Alonazi I Aldhayan Review on Dental ImplantologyEgypt J Hosp Med2018711221725

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C Ucer RS Khan Alveolar Ridge Preservation with Autologous Platelet-Rich Fibrin (PRF): Case Reports and the RationaleDent J (Basel)2023111024410.3390/dj11100244

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E Oncu AA Erbeyoglu Enhancement of immediate implant stability and recovery using platelet-rich fibrinInt J Periodontics Restor Dent20173925863

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22 

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Article History

Received : 26-06-2024

Accepted : 19-07-2024


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https://doi.org/10.18231/j.ijpi.2024.028


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