ORAL HEALTH EVIDENCE-BASED PRACTICE PROGRAM
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Title In Patients in Need of Dental Implants, Scalloped Implants Will Cause More Marginal Bone Loss Compared to Non-Scalloped Implants
Clinical Question In healthy patients in need of dental implants, is the bone level maintained better around scalloped implants as compared to non-scalloped implants?
Clinical Bottom Line In patients in need of dental implants, scalloped implants will cause more marginal bone loss compared to non-scalloped implants.
Best Evidence (you may view more info by clicking on the PubMed ID link)
PubMed ID Author / Year Patient Group Study type
(level of evidence)
#1) 21985286Den Hartog/201093 subjects with missing tooth being a maxillary incisor, canine or first premolar.Randomized Controlled Trial
Key resultsPatients with scalloped implants experienced significantly more marginal bone loss. At 18 months, the total amount of mean marginal bone loss was 1.19 ± 0.82mm for the smooth group (95% CI: 0.89-1.49), 0.9 ± 0.57mm for the rough group (95% CI: 0.7-1.1) and 2.01 ± 0.77mm for the scalloped group (95%: 1.74-2.28).
#2) 21062337Tymstra/201040 subjects with missing tooth being a maxillary incisor, canine or first premolar.Randomized Controlled Trial
Key resultsAfter one year, patients with scalloped implants showed significantly more marginal bone loss (scalloped: 2.7 ± 1.4mm, flat : 0.9 ± 0.8mm) and more inter-implant bone crest loss (scalloped: 1.8 ± 1.4mm, flat : 1.0 ± 0.9mm) compared to patients with flat implants. The difference between the treatment groups had a significance of p <0.001.
Evidence Search “Scalloped implants”, “marginal bone loss”
Comments on
The Evidence
Validity: Den Hartog and Tympstra each reported randomized controlled trials comparing marginal bone loss associated with scalloped implants or flat/smooth/rough implants. Patients were similar at start, had more than an 80% completion rate, were treated equally, received adequate follow-up, had adequate compliance and bias as well as competing interests were unlikely. Perspective: Even though scalloped implants caused more marginal bone loss, patient satisfaction was still high.
Applicability The studies consisted of patients needing implants to replace incisors, canines and premolars. Although patients were satisfied with the esthetics of scalloped implants, scalloped implants are no longer available on the market and are associated with increased marginal bone loss. Thus, practitioners should consider utilizing implant designs that are easily accessible with more favorable marginal bone retention.
Specialty/Discipline (General Dentistry) (Periodontics)
Keywords Scalloped implants, marginal bone loss
ID# 2627
Date of submission: 02/25/2014spacer
E-mail Laiv@livemail.uthscsa.edu
Author Veronica Lai
Co-author(s)
Co-author(s) e-mail
Faculty mentor/Co-author Guy Huynh-Ba, DDS
Faculty mentor/Co-author e-mail HuynhBa@uthscsa.edu
Basic Science Rationale
(Mechanisms that may account for and/or explain the clinical question, i.e. is the answer to the clinical question consistent with basic biological, physical and/or behavioral science principles, laws and research?)
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Comments on the CAT
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