## 4 Discussion  
The foundations of evidence-based dentistry (EBD) rely on using the best available clinical evidence to support the practitioner's daily practice. It relies on the practice of systematically finding, apprizing, and exploiting research findings as the foundation for clinical decision-making [7; 8; 9; 10; 12]. This systematic process requires an extensive and comprehensive literature search aiming to detect as much of the relevant literature as possible. In the current study, a comprehensive literature search of three different electronic databases and a manual search of related literature reviews resulted in the detection of 581 potential titles. To prevent heterogeneity of data, rigorous exclusion and inclusion criteria were applied in order to evaluate studies for the systematic review, including surgical procedure for sinus floor augmentation, absence of any clinical/radiographic sinus pathology prior to this procedure, and microscopic confirmation of the diagnosis of SuCC [5]. These same criteria were adopted in order to include cases from our files. As SuCC has been mostly associated with reports from the Japanese literature in connection with the Caldwell-Luc procedure for treating maxillary sinusitis, most of the titles from the initial screening had to be excluded for the purposes of the present search, so much so that only 14 possibly relevant full-text articles remained. Of these, nine articles were also excluded since they did not fulfill all inclusion criteria, yielding only five eligible articles, each presenting one case of SuCC as a sequela of sinus floor augmentation. Thus, the present systematic review of the literature revealed that to date, the current scientific knowledge regarding the possible complication of the development of SuCC following sinus floor augmentation relies primarily on case reports, which is considered to be a \begin{table}
\begin{tabular}{c c c c c c c c c c} \hline \hline
**Case \#** & **Authors** & **Country** & \begin{tabular}{c} **Age at** \\ **Diagnosis** \\ **(Years)** \\ \end{tabular} & **Sex** & \begin{tabular}{c} **Side of** \\ **Maxillary** \\ **Sinus** \\ \end{tabular} & \begin{tabular}{c} **Graft** \\ **Material** \\ **Augmentation** \\ \end{tabular} & \begin{tabular}{c} **No. of Implants** \\ **Placed/mo. after** \\ **Augmentation** \\ \end{tabular} & \
\begin{tabular}{c} **Diagnosis** \\ **(Years after** \\ **Augmentation** \\ **tion)** \\ \end{tabular} &
\begin{tabular}{c} **Cyst** \\ **Dimension** \\ **(Largest** \\ **Diameter)** \\ \end{tabular} \\ \hline
1 & \begin{tabular}{c} [PERSON] et al., \\ 1991 [4] \\ \end{tabular} & USA & 76 & F & Right & \
\begin{tabular}{c} No infor- \\ mation \\ \end{tabular} &
\begin{tabular}{c} 1 blade im- \\ plant/simultaneous \\ \end{tabular} & 3 & 1 cm \\ \hline
2 & \
\begin{tabular}{c} [PERSON] et al., \\ 2000 [16] \\ \end{tabular} & France & 41 & F & Left &
\begin{tabular}{c} Autogenous \\ bone \\ \end{tabular} & No information & 0.5 & 1 cm \\ \hline
3 & \begin{tabular}{c} [PERSON] et al., 2013 \\ [14] \\ \end{tabular} & \begin{tabular}{c} South \\ Korea \\ \end{tabular} & 60 & M & Right & \
\begin{tabular}{c} Autogenous \\ bone \\ \end{tabular} & 5 implants/5 mo. & 10 &
\begin{tabular}{c} No \\ information \\ \end{tabular} \\ \hline
4 & \begin{tabular}{c} [PERSON] et al., 2017 [15] \\ \end{tabular} & Japan & 64 & F & Left & \
\begin{tabular}{c} Triclcium \\ phosphate, \\ hydroxyapatite, \\ autogenous \\ bone \\ \end{tabular} & 4 implants/6 mo. & 9 &
\begin{tabular}{c} No \\ information \\ \end{tabular} \\ \hline
5 & [PERSON], 2018 [13] & \
\begin{tabular}{c} South \\ Korea \\ \end{tabular} & 63 & M & Left &
\begin{tabular}{c} Allograft, \\ autogens \\ nons bone, \\ collagen \\ \end{tabular} & 2 im- \\ plants/simultaneous & 5 & 4.5 cm \\ \hline \hline \end{tabular}
\end{table} 
Table 2: Compilation of cases of SuCC from the literature review. low level of evidence [7; 8; 9; 10].