Effects of clinical local factors on thickness and morphology of Schneiderian membrane: A retrospective clinical study

Ramanauskaitė, Aušra; Ataman-Duruel, Emel Tuğba; Duruel, Onurcem; Tözüm, Melek Didem; Yi̇ldi̇ri̇m, Tuba Talo; Tözüm, Tolga Fikret

doi:10.1111/cid.12807

Cited by 8 publications

(10 citation statements)

References 28 publications

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“…[24] also measured the thickness of the maxillary sinus membrane and found that tooth vitality, residual alveolar bone height, and periodontal bone loss did not influence the thickness of the maxillary sinus membrane. Different from our study, the thickness of the membrane in each apical location was not shown in the study of Ramanauskaite et a l[24] Here we find that the thickness of membrane in each root apex differs significantly among roots from different people. Therefore, the thickness of membrane should be taken into account when assessing the risk before the treatment.…”

Section: Discussionmentioning

confidence: 99%

Investigating the anatomical relationship between the maxillary molars and the sinus floor in a Chinese population using cone-beam computed tomography

Zhang

Zhang³

et al. 2019

BMC Oral Health

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Background: The anatomical relationship between the root apices of maxillary molars and the maxillary sinus floor (MSF) is important for the treatment of dental implantations and endodontic procedures. In this study, the detailed anatomical relationships between the root apices of maxillary molars and the MSF were studied in a Chinese population using CBCT. Methods: We collected the CBCT data files of patients who visited the stomatology outpatient clinic in Shanghai Fifth People's Hospital, Fudan University from January 1, 2017 to January 1, 2019 and measured the following items: the distance between the molar root apices and the MSF, the thickness of the mucosa and cortical bone of the MSF closest to the root apices, and the angle between the buccal and palatal roots. Results: The shortest distances between the root apices and the MSF were 1.57 ± 3.33 mm (the mesiobuccal root of the left second molar) and 1.61 ± 3.37 mm (the mesiobuccal root of the right second molar). Apical protrusion over the inferior wall of the sinus most often occurred in the mesiobuccal root of left second molar (frequency, 20.5%). The mucosa of the MSF was thinnest at the distobuccal root of the right second molar (1.52 ± 0.85 mm), the cortical bone of the MSF was thinnest at the mesiobuccal root of the right second molar (0.46 ± 0.28 mm), and the angle between the buccal and palatal roots ranged from 12.01°to 124.2°(42.36 ± 24.33°). Conclusions: Among the root apices of the maxillary molars, the mesiobuccal root apex of the left second molar was closest to the MSF, and it had the highest incidence of protrusion into the sinus. The unique anatomical relationship between the maxillary molars and the MSF in this Chinese population is critical for treatment planning for dental implantation or endodontic procedures.

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Section: Discussionmentioning

confidence: 99%

Investigating the anatomical relationship between the maxillary molars and the sinus floor in a Chinese population using cone-beam computed tomography

Zhang

Zhang³

et al. 2019

BMC Oral Health

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“…The morphology of the Schneiderian membrane on the CBCT scans was classified into five types according to previous reports 18 as follows: type I (healthy sinus membrane, no thickening), type II (flat sinus membrane, thickening without well‐defined outlines), type III (semispherical membrane, thickening with well‐defined outlines rising in an angle of >30° from the floor of the sinus walls), type IV (complete opacification of the sinus), and type V (mixed flat and semispherical thickenings) (Figure 5A–C).…”

Section: Resultsmentioning

confidence: 99%

“…There was a statistically significant difference in the distribution of the mucosal thickness before and after surgery. The second method involves classification of mucosal morphology into five types 18 . In the double zygomatic implant group, the number of type IV cases was zero preoperatively and increased to six (13%) postoperatively.…”

Section: Discussionmentioning

confidence: 99%

Longitudinal reactions of maxillary sinus in patients treated with multiple zygomatic implants: A modified radiographic evaluation with clinical follow‐up

Jin

Ling

et al. 2023

Clin Implant Dent Rel Res

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ObjectivesTo investigate the effects of zygomatic implant placement on the maxillary sinus using radiographic and clinical indicators.MethodsPatients with an atrophic maxilla who underwent zygomatic implant placement were included. The thickness and morphology of the Schneiderian membrane (SM), infundibular obstruction, and posterior bone wall of the maxillary sinus were analyzed. The generalized estimating equation and chi‐square tests were performed to compare the measurements.ResultsFifty patients with 100 maxillary sinuses were included. In total, 148 zygomatic implants and 105 regular implants were placed in the maxilla. Overall, the mean pre‐ and postoperative SM thickness was 2.79 ± 3.26 mm and 3.97 ± 5.45 mm, respectively (p = 0.063). In sinuses with two zygomatic implants, the SM thickness increased significantly from 2.12 ± 2.14 mm preoperatively to 4.07 ± 6.14 mm postoperatively (p = 0.026). The number of sinuses with type IV morphology (fully radiopaque) increased from zero preoperatively to six (13%) postoperatively. Sinuses with a single zygomatic implant showed no difference in the pre‐ and postoperative SM thickness. Postoperatively, six sinuses had infundibulum obstructions. Postoperative osteitis of the bilateral sinuses was found in two patients.ConclusionsWe have proposed a new imaging evaluation method and system for evaluating the maxillary sinus response. Preoperative infundibulum obstruction combined with mucosal thickening and double zygomatic implant placement are more likely to induce postoperative maxillary sinus mucositis and osteitis.

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“…With respect to sex, Dursun et al [26] conducted investigations on SMT due to the presence of teeth and showed that SMT was significantly higher in males compared to females. Ramanauskaite et al [30] also conducted investigations on SMT in the edentulous area and various local factors and showed that local factors like residual bone height and bone absorption were not correlated, but that males had a significantly higher thickness. Furthermore, Aksoy et al [31] conducted a similar investigation and showed that the rates of SMT > 2 mm in males and females were 52.8% and 35.9%, respectively, with males showing significantly higher thickness.…”

Section: Discussionmentioning

confidence: 99%

Factors influencing the sinus membrane thickness in edentulous regions: a cone-beam computed tomography study

et al. 2021

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Background During implant treatment in the maxillary molar area, maxillary sinus floor augmentation is often performed to ameliorate the reduced alveolar bone height attributable to bone remodeling and pneumatization-induced expansion of the maxillary sinus. However, this augmentation may cause complications such as misplaced implants, artery damage, and maxillary sinus mucosal perforation; infections like maxillary sinusitis; and postsurgical complications such as bone graft leakage and postoperative nasal hemorrhaging. To reduce the complications during maxillary sinus floor augmentation and postoperative infections, we performed retrospective investigations of various systemic and local factors that influence pre-operative sinus mucosal thickness (SMT) by using cone-beam computed tomography (CBCT). Subjects included patients who underwent maxillary sinus floor augmentation in an edentulous maxillary molar area with a lateral approach. Pre-operative SMT, existing bone mass, and nasal septum deviation were measured using CBCT images. Relationships between SMT and the following influencing factors were investigated: (1) age, (2) sex, (3) systemic disease, (4) smoking, (5) period after tooth extraction, (6) reason for tooth extraction, (7) residual alveolar bone height (RBH), (8) sinus septa, and (9) nasal septum deviation. Correlations were also investigated for age and RBH (p < 0.05). Results We assessed 35 patients (40 sinuses; 11 male, 24 female). The average patient age was 58.90 ± 9.0 years (males, 57.9 ± 7.7 years; females, 59.9 ± 9.4 years; age range, 41–79 years). The average SMT was 1.09 ± 1.30 mm, incidence of SMT > 2 mm was 25.0%, incidence of SMT < 0.8 mm was 50.0%, and the average RBH was 2.14 ± 1.02 mm. The factors that influenced SMT included sex (p = 0.0078), period after tooth extraction (p = 0.0075), reason for tooth extraction (p = 0.020), sinus septa (p = 0.0076), and nasal septum deviation (p = 0.038). Conclusions Factors associated with higher SMT included male sex, interval following tooth extraction < 6 months, periapical lesions, sinus septa, and nasal septum deviation. Factors associated with SMT > 2 mm were sex and reason for tooth extraction, while factors associated with SMT < 0.8 mm were time following tooth extraction and nasal septum deviation. Despite the limitations of this study, these preoperative evaluations may be of utmost importance for safely conducting maxillary sinus floor augmentation.

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Effects of clinical local factors on thickness and morphology of Schneiderian membrane: A retrospective clinical study

Cited by 8 publications

References 28 publications

Investigating the anatomical relationship between the maxillary molars and the sinus floor in a Chinese population using cone-beam computed tomography

Investigating the anatomical relationship between the maxillary molars and the sinus floor in a Chinese population using cone-beam computed tomography

Longitudinal reactions of maxillary sinus in patients treated with multiple zygomatic implants: A modified radiographic evaluation with clinical follow‐up

Factors influencing the sinus membrane thickness in edentulous regions: a cone-beam computed tomography study

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