Open Access
Systematic Review

Table 2

Comparison of the mean age and frequency distributions between early phase (EP) and late phase (LP) regarding 10 items (a–j) for displaced dental implant articles.

Research items Factor Early-phase Late-phase Total P-values
A Country* 11 10 21 1.0000
B Article 17 15 32 0.8601
C Articles by year Correlation Refer Fig. 2 Pearson’s r = 0.06 0.9157§

D Case Males and females 50 42 92 0.4657

E Age n = 35 n = 18 53

Mean ± SE 55.9 ± 1.8 55.3 ± 2.5 0.7212

F Sex Male 31 24 55 0.6739
Female 19 18 37
G Anatomical sites MS 46 34 80 0.1336
OTH 4 8 12
H Treatment techniques IS 30 7 37 0.0000
ES 19 33 52
I Surgical approaches TOA 30 6 36 0.0000
TNA 2 27 29
J Anesthesia types LA 22 9 31 0.0007
GA 12 29 41

Abbreviations: ES, endoscopic surgery; IS: intraoral surgery; GA: general anesthesia; LA, local anesthesia; MS, maxillary sinus; n, number of patients; OTH, other regions; SE, standard error; TNA: transnasal approach; TOA, transoral approach.

*Duplicate country names were counted as one.

Exact binomial tests.

Pearson’s correlation coefficient (r) between publication year and the number of articles

§Pearson’s correlation test.

|Mann–Whitney U-test.

Fisher’s exact test.

A P-value of less than 0.05 was considered to be statistically significant.

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