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Background
Implant therapy for missing teeth has been well documented for over four decades and has proven to be a successful means of oral rehabilitation. There has been a paradigm shift in the management of tooth loss in the posterior region of the maxilla from delayed implant placement toward immediate or early implant placement. The rationale behind this is to prevent or at least minimize bone loss. However, the rehabilitation of the first molar region using dental implants has limited long-term clinical documentation and is still a challenge for those who practice implant dentistry.
Aim/Hypothesis
This study investigated and measured the dimensions of maxillary first molars using CBCT in the context of examining the effectiveness of immediate implant placement.
Material and Methods
The CBCT images of 68 patients were collected. We measured the dimensions of the upper first molar sockets in both sagittal and coronal aspects, as well as the height of the alveolar bone crest (ABC) to the sinus membrane (SM) at the center of the optimal implant position. Sinus membrane and upper first molar relationships were analyzed sagittally and coronally. Interradicular bone presence and root intrusion into the sinus (IRS) were also noted.
Results
No statistically significant relationship was observed between IRS and age or gender. However, IRS was significantly related to sagittal type, as a type 1 sagittal relationship was characterized by higher root intrusion. The socket dimensions of male subjects were statistically significantly higher than those of female subjects, both coronally and sagittally. Changes in the socket dimensions were not significantly related to age in the sagittal plane. However, coronal plane measurements did increase with age. ABC-SM measurements decreased with age, but these changes were not statistically significant.
Conclusions and clinical implications
Our results showed that the socket dimensions in the upper first molar area are adequate for wider implant placement, but an implant longer than 8 mm increased the risk of perforation. All oral surgeons should be familiar with these anatomical variations so they can adopt appropriate additional practices and inform patients about the risks before operating.
Background
Implant therapy for missing teeth has been well documented for over four decades and has proven to be a successful means of oral rehabilitation. There has been a paradigm shift in the management of tooth loss in the posterior region of the maxilla from delayed implant placement toward immediate or early implant placement. The rationale behind this is to prevent or at least minimize bone loss. However, the rehabilitation of the first molar region using dental implants has limited long-term clinical documentation and is still a challenge for those who practice implant dentistry.
Aim/Hypothesis
This study investigated and measured the dimensions of maxillary first molars using CBCT in the context of examining the effectiveness of immediate implant placement.
Material and Methods
The CBCT images of 68 patients were collected. We measured the dimensions of the upper first molar sockets in both sagittal and coronal aspects, as well as the height of the alveolar bone crest (ABC) to the sinus membrane (SM) at the center of the optimal implant position. Sinus membrane and upper first molar relationships were analyzed sagittally and coronally. Interradicular bone presence and root intrusion into the sinus (IRS) were also noted.
Results
No statistically significant relationship was observed between IRS and age or gender. However, IRS was significantly related to sagittal type, as a type 1 sagittal relationship was characterized by higher root intrusion. The socket dimensions of male subjects were statistically significantly higher than those of female subjects, both coronally and sagittally. Changes in the socket dimensions were not significantly related to age in the sagittal plane. However, coronal plane measurements did increase with age. ABC-SM measurements decreased with age, but these changes were not statistically significant.
Conclusions and clinical implications
Our results showed that the socket dimensions in the upper first molar area are adequate for wider implant placement, but an implant longer than 8 mm increased the risk of perforation. All oral surgeons should be familiar with these anatomical variations so they can adopt appropriate additional practices and inform patients about the risks before operating.
Background
Implant therapy for missing teeth has been well documented for over four decades and has proven to be a successful means of oral rehabilitation. There has been a paradigm shift in the management of tooth loss in the posterior region of the maxilla from delayed implant placement toward immediate or early implant placement. The rationale behind this is to prevent or at least minimize bone loss. However, the rehabilitation of the first molar region using dental implants has limited long-term clinical documentation and is still a challenge for those who practice implant dentistry.
Aim/Hypothesis
This study investigated and measured the dimensions of maxillary first molars using CBCT in the context of examining the effectiveness of immediate implant placement.
Material and Methods
The CBCT images of 68 patients were collected. We measured the dimensions of the upper first molar sockets in both sagittal and coronal aspects, as well as the height of the alveolar bone crest (ABC) to the sinus membrane (SM) at the center of the optimal implant position. Sinus membrane and upper first molar relationships were analyzed sagittally and coronally. Interradicular bone presence and root intrusion into the sinus (IRS) were also noted.
Results
No statistically significant relationship was observed between IRS and age or gender. However, IRS was significantly related to sagittal type, as a type 1 sagittal relationship was characterized by higher root intrusion. The socket dimensions of male subjects were statistically significantly higher than those of female subjects, both coronally and sagittally. Changes in the socket dimensions were not significantly related to age in the sagittal plane. However, coronal plane measurements did increase with age. ABC-SM measurements decreased with age, but these changes were not statistically significant.
Conclusions and clinical implications
Our results showed that the socket dimensions in the upper first molar area are adequate for wider implant placement, but an implant longer than 8 mm increased the risk of perforation. All oral surgeons should be familiar with these anatomical variations so they can adopt appropriate additional practices and inform patients about the risks before operating.
Background
Implant therapy for missing teeth has been well documented for over four decades and has proven to be a successful means of oral rehabilitation. There has been a paradigm shift in the management of tooth loss in the posterior region of the maxilla from delayed implant placement toward immediate or early implant placement. The rationale behind this is to prevent or at least minimize bone loss. However, the rehabilitation of the first molar region using dental implants has limited long-term clinical documentation and is still a challenge for those who practice implant dentistry.
Aim/Hypothesis
This study investigated and measured the dimensions of maxillary first molars using CBCT in the context of examining the effectiveness of immediate implant placement.
Material and Methods
The CBCT images of 68 patients were collected. We measured the dimensions of the upper first molar sockets in both sagittal and coronal aspects, as well as the height of the alveolar bone crest (ABC) to the sinus membrane (SM) at the center of the optimal implant position. Sinus membrane and upper first molar relationships were analyzed sagittally and coronally. Interradicular bone presence and root intrusion into the sinus (IRS) were also noted.
Results
No statistically significant relationship was observed between IRS and age or gender. However, IRS was significantly related to sagittal type, as a type 1 sagittal relationship was characterized by higher root intrusion. The socket dimensions of male subjects were statistically significantly higher than those of female subjects, both coronally and sagittally. Changes in the socket dimensions were not significantly related to age in the sagittal plane. However, coronal plane measurements did increase with age. ABC-SM measurements decreased with age, but these changes were not statistically significant.
Conclusions and clinical implications
Our results showed that the socket dimensions in the upper first molar area are adequate for wider implant placement, but an implant longer than 8 mm increased the risk of perforation. All oral surgeons should be familiar with these anatomical variations so they can adopt appropriate additional practices and inform patients about the risks before operating.