Maxillary Sinus Floor and Alveolar Crest Alterations Following Extraction of Single Maxillary Molars: A Retrospective CBCT Analysis

Hameed, Sabina; Bakhshalian, Neema; Alwazan, Essa; Wallace, Stephen S.; Zadeh, Homayoun H.

doi:10.11607/prd.3865

Cited by 18 publications

(22 citation statements)

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“…Extracting the second molar can cause cortical bone fractures between the root end and the maxillary sinus. Thus, the extraction of second maxillary molars is considered to cause excessive sinus pneumatization [2,[7][8][9]. In the present study, greater sinus pneumatization was observed after the extraction of first molars.…”

Section: Sharan Et Al Also Investigated the Relationship Between Toosupporting

confidence: 52%

“…Currently, cone-beam computed tomography (CBCT) is a common diagnostic tool that supports threedimensional (3D) imaging and provides thin, detailed sections to assess the relationship between the maxillary sinus floor and the alveolar bone ridge. Although this method reduces the overlapping of anatomical structures and enables a better assessment, a few studies used CBCT to analyze sinus floor pneumatization in the posterior maxilla [1,2,[7][8][9]. The purpose of this study was to determine the amount of sinus pneumatization after the extraction of maxillary teeth in the premolar and molar regions associated with the maxillary sinus via the evaluation of panoramic views.…”

Section: Discussionmentioning

confidence: 99%

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Tooth Extraction as a Risk Factor for Maxillary Sinus Pneumatization: A Case-control Study

Ocak

Çolpak²,

Demetoğlu

et al. 2020

Preprint

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Purpose Maxillary sinus pneumatization following teeth extraction may require various treatment plans such as sinus lifting and alveolar grafting procedures to obtain sufficient alveolar bone height for implant surgery. The aim of this study was to identify sinus pneumatization and to help in determining the proper time for preprosthetic surgery following extraction of maxillary sinus related teeth. Methods We evaluated 75 teeth extraction related to maxillary sinus floor. The panoramic radiographs were evaluated before and after extraction of the posterior maxillary teeth. The radiographs were divided into 5 groups according to duration after extraction. Two reference points (the first point corresponds to the nasal spine while the second point corresponds to the most inferior point of the floor of the maxillary sinus wall) were determined on digital panoramic radiographs before and after teeth extraction and the distance between both aforementioned points was measured. Results The amount of pneumatization was found to be increased with time. The pneumatization within the first 6 months was limited. However, a sudden increase of pneumatization after 6th month, especially the highest between 18th and 24th months, was observed. The mean pneumatization amount was found to be highest in the 1st molar group. Conclusion According to the results of the present study, surgeons should not be waited any more than 6 months after tooth extraction for preprosthetic surgery in the posterior maxillary region as long as physiological healing of extraction socket is allowed.

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Section: Sharan Et Al Also Investigated the Relationship Between Toosupporting

confidence: 52%

Section: Discussionmentioning

confidence: 99%

Tooth Extraction as a Risk Factor for Maxillary Sinus Pneumatization: A Case-control Study

Ocak

Çolpak²,

Demetoğlu

et al. 2020

Preprint

View full text Add to dashboard Cite

show abstract

“…The placement of implants in the edentulous posterior maxilla can be challenging due to the insufficient residual bone height which results from the combination of post‐extractive alveolar remodeling and maxillary sinus pneumatization 1,2 . When favorable inter‐maxillary relationships are maintained, sinus floor elevation may represent a safe and reliable option to increase available bone height to allow implant placement 3,4 .…”

Section: Introductionmentioning

confidence: 99%

Factors influencing the prevalence of peri‐implantitis in implants inserted in augmented maxillary sinuses: A multicenter cross‐sectional study

Stacchi

Troiano

Rapani

et al. 2020

Journal of Periodontology

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Background Peri‐implantitis is widely recognized as a major cause of late implant failure, both in pristine and regenerated bone. The present study aims to evaluate the prevalence of peri‐implantitis in implants inserted in augmented maxillary sinuses and to analyze possible risk factors. Methods A cross‐sectional study was conducted in four centers including patients who underwent lateral or transcrestal sinus augmentation and received dental implants. Clinical and anamnestic data were collected using a standardized form. Univariate and multivariate logistic regression analyses have been performed for both implant‐level and patient‐level variables. Subsequently, a multilevel logistic mixed‐effect model was built to analyze variables correlated with the occurrence of peri‐implantitis. Results A total of 156 patients (61 males and 95 females; mean age: 60.9 ± 11.6 years) with 315 implants inserted into augmented maxillary sinuses with a follow‐up ranging from 1 to 18 years were evaluated. Seven implants in seven patients were previously lost for peri‐implantitis (2.2% and 4.5% at implant‐ and patient‐level, respectively); 250 implants showed no signs of peri‐implant diseases (79.4%), 34 implants presented mucositis (10.8%), and 24 implants exhibited peri‐implantitis (7.6%). Corresponding data evaluated at patient‐level were 125 (80.1%), 17 (10.9%), and 14 (9.0%), respectively. At the multilevel analysis, history of periodontitis, sinus elevation with lateral approach, and one‐stage sinus floor elevation significantly correlated with the occurrence of peri‐implantitis (P <0.001). Conclusions History of periodontitis confirmed its well‐known role as a risk factor for peri‐implant pathologies. In addition, both lateral window technique and one‐stage sinus floor elevation seemed to represent significant risk factors for peri‐implantitis.

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“…Several studies have investigated the amount and causal factors of pneumatization after tooth extraction, reporting to conflicting results. Some demonstrated an increase in the size of the sinus after tooth extraction [ 6 7 8 9 10 11 ], while others did not find significant changes [ 12 13 14 ]. Moreover, among the studies reporting MSP post-extraction, heterogeneity has been reported regarding conditions that favor susceptibility and the extent of pneumatization.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, among the studies reporting MSP post-extraction, heterogeneity has been reported regarding conditions that favor susceptibility and the extent of pneumatization. The reported conditions were tooth location, the configuration of the sinus floor, the position of the sinus floor concerning the root apex, and the number of extracted teeth [ 8 13 ]. The extent of pneumatization ranged considerably, with reported values of 0.47±0.23 mm (mean ± standard deviation [SD]) [ 13 ], 0.9±2.93 mm [ 9 ], 2.18±2.89 and 1.83±2.46 mm [ 8 ], and 1.30±0.27 mm (mean ± SE) [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

Factors affecting maxillary sinus pneumatization following posterior maxillary tooth extraction

Lim

Kim

et al. 2021

J Periodontal Implant Sci

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Purpose The aims of the present study were 1) to quantitatively evaluate the extent of sinus pneumatization and 2) to determine the factors affecting sinus pneumatization. Methods Based on implant treatment records, a list of patients who underwent implant placement on the posterior maxilla was obtained. Among them, patients with pre-extraction and post-extraction (before implant placement) panoramic radiographs were selected. After excluding radiographs with low resolution and image distortion, the radiographs before and after extraction were superimposed using computer software. Subsequently, the extent of sinus pneumatization (the vertical change of the sinus floor) was measured. Simple and multiple mixed models were used to determine the factors affecting sinus pneumatization. Results A total of 145 patients were eligible for the present investigation. The average extent of sinus pneumatization was 1.56±3.93 mm at 176 tooth sites. Male sex, single tooth extraction, extraction of an endodontically compromised tooth, a class I root-sinus relationship, and sinus membrane thickening >10 mm favored pneumatization, but without statistical significance. The maxillary second molar presented the greatest pneumatization (2.25±4.39 mm) compared with other tooth types. This finding was confirmed in the multiple mixed model, which demonstrated a statistically significant impact of the extraction of a second molar compared with the extraction of a first premolar. Conclusions Maxillary sinus pneumatization was 1.56±3.93 mm on average. The extraction of a second molar led to the greatest extent of pneumatization, which should be considered in the treatment plan for this tooth site.

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Maxillary Sinus Floor and Alveolar Crest Alterations Following Extraction of Single Maxillary Molars: A Retrospective CBCT Analysis

Cited by 18 publications

References 0 publications

Tooth Extraction as a Risk Factor for Maxillary Sinus Pneumatization: A Case-control Study

Tooth Extraction as a Risk Factor for Maxillary Sinus Pneumatization: A Case-control Study

Factors influencing the prevalence of peri‐implantitis in implants inserted in augmented maxillary sinuses: A multicenter cross‐sectional study

Factors affecting maxillary sinus pneumatization following posterior maxillary tooth extraction

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